PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT DISTINCT ?ship ?shipLabel ?serviceEntry WHERE {
  ?ship wdt:P729 ?serviceEntry .
  FILTER ( ?serviceEntry >= "1939-01-01T00:00:00Z" ^^ xsd:dateTime && ?serviceEntry <= "1946-12-31T23:59:59Z" ^^ xsd:dateTime ) .
  {
    ?ship wdt:P8047 wd:Q20 .
  } UNION {
    ?ship wdt:P17 wd:Q20 .
  }
  ?ship wdt:P31 ?type .
  ?type wdt:P279 * wd:Q11446 .
  OPTIONAL {
    ?ship rdfs:label ?shipLabel FILTER ( lang( ?shipLabel ) = "en" )
  }
}
ORDER BY ?serviceEntry

Using entities:
ship (wd:Q11446), also known as marine vessel, ships, vessel, water vessel
Norway (wd:Q20), also known as Kingdom of Norway

Using properties:
country (wd:P17 as wdt), also known as host country, land, sovereign state, state, P17
subclass of (wd:P279 as wdt), also known as all members of this class also belong to, category of, form of, has superclass, is a class of, etc.
instance of (wd:P31 as wdt), also known as example of, has type, is a, is an, is of type, etc.
service entry (wd:P729 as wdt), also known as commissioned, date of service entry, deployment date, entered service, entry to service, etc.
country of registry (wd:P8047 as wdt), also known as flag of convenience, flag state, ship's flag, P8047

Answer:
Plan and steps (with reasoning and actions):

1) Identify relevant properties and classes:
   - I searched for a property representing "entered service / commissioned" and found service entry (P729).
   - For Norwegian ships I considered country of registry (P8047) and also country (P17) as fallback, and found Norway (wd:Q20).
   - For ships I used the class ship (wd:Q11446) and allowed subclasses via wdt:P279*.

2) Build and test the query iteratively:
   - I constrained items to have wdt:P729 (service entry) between 1939-01-01 and 1946-12-31.
   - I required that items be ships (instance-of a type that is subclass of wd:Q11446) and that they are Norwegian by P8047 (country of registry) or P17 (country).

3) Final query (executed against Wikidata):
   (The query below returns the item IRIs (?ship), optional English labels (?shipLabel), and the service entry date (?serviceEntry).)

SELECT DISTINCT ?ship ?shipLabel ?serviceEntry WHERE {
  ?ship wdt:P729 ?serviceEntry .
  FILTER (?serviceEntry >= "1939-01-01T00:00:00Z"^^xsd:dateTime && ?serviceEntry <= "1946-12-31T23:59:59Z"^^xsd:dateTime) .
  {
    ?ship wdt:P8047 wd:Q20 .
  } UNION {
    ?ship wdt:P17 wd:Q20 .
  }
  ?ship wdt:P31 ?type .
  ?type wdt:P279* wd:Q11446 .
  OPTIONAL { ?ship rdfs:label ?shipLabel FILTER (lang(?shipLabel) = "en") }
} ORDER BY ?serviceEntry

Execution and results:
- I executed the query on the Wikidata endpoint. It returned 92 results.
- Example rows from the result set (IRI — English label — service entry date):
  - wd:Q12716671 — Kvalsund I — 1939-01-01T00:00:00Z
  - wd:Q23042441 — Bastø II — 1939-01-01T00:00:00Z
  - wd:Q83647303 — Andenes — 1939-01-01T00:00:00Z
  - wd:Q11987498 — MS Bess — 1939-01-01T00:00:00Z
  - wd:Q19380704 — Haugesund — 1942-01-01T00:00:00Z
  - wd:Q19380712 — Jylland — 1943-01-01T00:00:00Z
  - wd:Q103929850 — Deneb — 1942-03-01T00:00:00Z
  - wd:Q104521267 — MS Cometa — 1941-07-01T00:00:00Z
  - wd:Q104534562 — MS Vela — 1946-10-01T00:00:00Z
  - wd:Q104603040 — MS Mercur — 1946-12-01T00:00:00Z
  - wd:Q116552998 — Mildrid — 1946-12-12T00:00:00Z

If you want, I can:
- Return the full list of all 92 ships (I can provide the complete table of IRIs, labels and dates), or
- Refine the query to include only military warships or only merchant vessels, or to use stricter Norwegian criteria (e.g., only P8047 country of registry), or
- Provide results in CSV/JSON format for download.

Which Norwegian ships entered operational service between 1939 and 1946, along with their service entry dates?

[System]
You are a question answering assistant. Your job is to generate a SPARQL query to answer a given user question.

You should follow a step-by-step approach to generate the SPARQL query:
1. Determine possible entities and properties implied by the user question.
2. Search for the entities and properties in the knowledge graphs. Where applicable, constrain the searches with already identified entities and properties.
3. Gradually build up the SPARQL query using the identified entities and properties. Start with simple queries and add more complexity as needed. Execute intermediate queries to get feedback and to verify your assumptions. You may need to refine or rethink your current plan based on the query results and go back to step 2 if needed, possibly multiple times.
4. Use the answer or cancel function to finalize your answer and stop the generation process.

You have access to the following knowledge graphs:
wikidata at http://localhost:7001 without notes

You are provided with the following notes across all knowledge graphs:
No notes available

You can use the following SPARQL prefixes implicitly in all functions:
cc: <http://creativecommons.org/ns#
data: <https://www.wikidata.org/wiki/Special:EntityData/
dct: <http://purl.org/dc/terms/
geo: <http://www.opengis.net/ont/geosparql#
geof: <http://www.opengis.net/def/function/geosparql/
imdb: <https://www.imdb.com/
math: <http://www.w3.org/2005/xpath-functions/math#
ontolex: <http://www.w3.org/ns/lemon/ontolex#
owl: <http://www.w3.org/2002/07/owl#
p: <http://www.wikidata.org/prop/
pq: <http://www.wikidata.org/prop/qualifier/
pqn: <http://www.wikidata.org/prop/qualifier/value-normalized/
pqv: <http://www.wikidata.org/prop/qualifier/value/
pr: <http://www.wikidata.org/prop/reference/
prn: <http://www.wikidata.org/prop/reference/value-normalized/
prov: <http://www.w3.org/ns/prov#
prv: <http://www.wikidata.org/prop/reference/value/
ps: <http://www.wikidata.org/prop/statement/
psn: <http://www.wikidata.org/prop/statement/value-normalized/
psv: <http://www.wikidata.org/prop/statement/value/
qfn: <http://qlever.cs.uni-freiburg.de/function#
ql: <http://qlever.cs.uni-freiburg.de/builtin-functions/
qlss: <https://qlever.cs.uni-freiburg.de/spatialSearch/
rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: <http://www.w3.org/2000/01/rdf-schema#
ref: <http://www.wikidata.org/reference/
s: <http://www.wikidata.org/entity/statement/
schema: <http://schema.org/
skos: <http://www.w3.org/2004/02/skos/core#
v: <http://www.wikidata.org/value/
wd: <http://www.wikidata.org/entity/
wdno: <http://www.wikidata.org/prop/novalue/
wdt: <http://www.wikidata.org/prop/direct/
wdtn: <http://www.wikidata.org/prop/direct-normalized/
wikibase: <http://wikiba.se/ontology#
xsd: <http://www.w3.org/2001/XMLSchema#
foaf: <http://xmlns.com/foaf/0.1/
dc: <http://purl.org/dc/elements/1.1/
gn: <http://www.geonames.org/ontology#
bd: <http://www.bigdata.com/rdf#
hint: <http://www.bigdata.com/queryHints#
qb: <http://purl.org/linked-data/cube#
void: <http://rdfs.org/ns/void#

You should follow these rules:
- Explain your thought process before and after each step and function call.
- Do not just use or make up entity or property identifiers without verifying their existence in the knowledge graphs first.
- Do not use "SERVICE wikibase:label { bd:serviceParam wikibase:language ..." in SPARQL queries. It is not SPARQL standard and unsupported by the used QLever SPARQL endpoints. Use rdfs:label or similar properties to get labels instead.
- Always execute your final SPARQL query before giving an answer to make sure it returns the expected results.
- The SPARQL query should always return the actual identifiers / IRIs of the items in its result. It additionally may return labels or other human-readable information, but they are optional and should be put within optional clauses unless explicitly requested by the user.
- Do not stop early if there are still obvious improvements to be made to the SPARQL query. For example, keep refining your SPARQL query if its result contains irrelevant items or is missing items you expected.
- Do not perform additional computation (e.g. filtering, sorting, calculations) on the result of the SPARQL query to determine the answer. All computation should be done solely within SPARQL.
- For questions with a "True" or "False" answer the SPARQL query should be an ASK query.

[User] Which Norwegian ships entered operational service between 1939 and 1946, along with their service entry dates?

[Assistant] I'll search for properties related to "commissioned", "entered service", and "in service" on Wikidata to find the right property to use. Then I'll search for items that are ships and have Norway as country of origin or flag. I'll iteratively build a SPARQL query and test it. I'll start by searching for likely properties.

[Tool]
Top 10 property alternatives:
1. vessel class (wd:P289 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via ship class), also known as class of vessel, ship class, spacecraft class, submarine class, watercraft class, etc.: series of vessels or other watercraft built to the same design of which this vessel is a member / is subproperty of instance of
2. member of the crew of (wd:P5096 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via served aboard), also known as crewmember of, crew of, member of crew, served aboard, ship appointments, etc.: person who has been a member of a crew associated with the ... crew member (P1029), backup or reserve team or crew (P3015) / person who has been a member of a crew associated with the ... crew member (P1029), backup or reserve team or crew (P3015) / is subproperty of member of
3. created for (wd:P9883 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via commissioned for), also known as cause of creation, commissioned for, made for, occasion, on the occasion of, etc.: a work, event, etc. for which the subject work was created ... was created for; a film that a screenplay was written for)
4. vessel (wd:P1876 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via ship), also known as boat, craft, orbiter, ship, spacecraft, etc.: vessel involved in this mission, navigation or event / vessel involved in this mission, voyage or event
5. service entry (wd:P729 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via commissioned), also known as commissioned, date of service entry, deployment date, entered service, entry to service, etc.: date or point in time on which a piece or class of equipment entered operational service / date on which a piece or class of equipment entered operational service / is subproperty of start time
6. Admiralty number (wd:P3562 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P3562: identifier of lighthouses by United Kingdom Hydrographic Office
7. volume as quantity (wd:P2234 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via tonnage), also known as fluid capacity, liquid capacity, quantity as volume, spatial volume, tonnage, etc.: quantity of three-dimensional space / quantity of three-dimensional space
8. USCG MIC (wd:P9411 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as United States Coast Guard  Manufacturer's Identification Code, United States Coast Guard MIC, USCG Manufacturer's Identification Code, U.S. Coast Guard  Manufacturer's Identification Code, U.S. Coast Guard MIC, etc.: United States Coast Guard Manufacturer's (of boat) Identification Code ("MIC")
9. armament (wd:P520 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via ship armament), also known as armed with, ship armament, weapon, wields, P520: equippable weapon item for the subject / equippable weapon item for the subject / equippable weapon item for the subject / is subproperty of has facility / is subproperty of facility
10. commissioned by (wd:P88 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as built for, client, commissioner, developer, made for, etc.: person or organisation that commissioned this work / person or organization that commissioned this work / person or organization that commissioned this work

[Assistant] I'll search for the entity for "ship" and "Norway" to confirm their Q-ids. Then I'll search for the property "service entry" usage and examples.

[Tool]
Top 10 entity alternatives:
1. ship (wd:Q11446), also known as marine vessel, ships, vessel, water vessel: is subclass of transport vehicle / is instance of watercraft type / is subclass of watercraft / is subclass of Watercraft / large water-borne vehicle / large buoyant watercraft / large buoyant watercraft / is subclass of vessel
2. Shippensburg University of Pennsylvania (wd:Q7498066, matched via Ship), also known as Ship, ship.edu, Shipenburg, Shipensburg, Shippenburg, etc.: is instance of public educational institution of the United States / public university in Shippensburg, Pennsylvania, United States / is instance of university
3. INPP5D (wd:Q18027947, matched via SHIP), also known as hp51CN, inositol polyphosphate-5-phosphatase D, p150Ship, SHIP, SHIP-1, etc.: protein-coding gene in the species Homo sapiens / is subclass of protein-coding gene / is instance of gene
4. Morena Ship (wd:Q21472350, matched via Ship), also known as Ship: is instance of moraine / hill in Antarctica
5. The Ship (wd:Q24022978, matched via Ship), also known as Ship, The Ship, Fitzrovia: public house in New Cavendish Street, London, UK / public house in New Cavendish Street, London, UK / is instance of pub
6. The Ship (wd:Q7763836, matched via Ship), also known as Ship: episode of Star Trek: Deep Space Nine (S5 E2) / is instance of Star Trek episode
7. Search for Hidden Particles (wd:Q108443828, matched via SHiP), also known as SHiP: is instance of Fixed-target experiment / Particle physics experiment at CERN
8. ship (wd:Q11613966): is instance of Conway's Game of Life pattern / cellular automaton pattern / is instance of Still life / is instance of still life
9. Ship (wd:Q11243247): is instance of musical group / idol group
10. The Ship Public House (wd:Q26351419, matched via Ship), also known as Ship, The Ship, Croydon Town Centre, Croydon: pub in Croydon, London, England, UK / is instance of pub / pub in Croydon, UK

[Assistant] I'll check the "service entry" property (P729) usage and its triple pattern to confirm.

[Tool]
Got 65,536 rows and 3 columns, showing the first 10 rows below:
| subject                                            | property                 | object                              |
| -------------------------------------------------- | ------------------------ | ----------------------------------- |
| The Pentagon (wd:Q11208)                           | service entry (wdt:P729) | 1942-04-01T00:00:00Z (xsd:dateTime) |
| Channel Tunnel (wd:Q10257)                         | service entry (wdt:P729) | 1994-11-14T00:00:00Z (xsd:dateTime) |
| General Dynamics F-16 Fighting Falcon (wd:Q100026) | service entry (wdt:P729) | 1979-01-01T00:00:00Z (xsd:dateTime) |
| Fukushima Daiichi Nuclear Power Plant (wd:Q114295) | service entry (wdt:P729) | 1971-03-26T00:00:00Z (xsd:dateTime) |
| Panzer IV (wd:Q12186)                              | service entry (wdt:P729) | 1939-01-01T00:00:00Z (xsd:dateTime) |
| Fram (wd:Q110283)                                  | service entry (wdt:P729) | 1891-01-01T00:00:00Z (xsd:dateTime) |
| Ever Given (wd:Q104378621)                         | service entry (wdt:P729) | 2018-09-25T00:00:00Z (xsd:dateTime) |
| Sturmgeschütz III (wd:Q117936)                     | service entry (wdt:P729) | 1940-01-01T00:00:00Z (xsd:dateTime) |
| Colt Single Action Army (wd:Q1112183)              | service entry (wdt:P729) | 1873-01-01T00:00:00Z (xsd:dateTime) |
| Agni-V (wd:Q1046130)                               | service entry (wdt:P729) | 2012-01-17T00:00:00Z (xsd:dateTime) |
| ...                                                | ...                      | ...                                 |

[Assistant] I'll search for properties that indicate a ship's country or flag, like "flag", "country of origin", "country", or "flag carried".

[Tool]
Top 10 property alternatives:
1. country of registry (wd:P8047 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via ship's flag), also known as flag of convenience, flag state, ship's flag, P8047: country where a ship is or has been registered / is subproperty of country
2. MMSI (wd:P587 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as MarineTraffic ID, MarineTraffic Ship ID, Maritime Mobile Service Identity, MMSI number, MMSI Number, etc.: Maritime Mobile Service Identity of a ship station. Format 8 or 9 digits / Maritime Mobile Service Identity of a ship station
3. Norwegian war sailor register ship-ID (wd:P5156 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P5156: identifikation number for ship in the Norwegian war sailor register
4. National Historic Ships ID (wd:P4750 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P4750: ID for a vessel as found on the National Historic Ships website
5. maritime identification digits (wd:P2979 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as MID, P2979: identifer used by radio communication facilities to identify ... messages as part of their Maritime Mobile Service Identities. / identifier used by radio communication facilities to identify ... messages as part of their Maritime Mobile Service Identities
6. symbol of (wd:P8058 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via flag of), also known as emblem of, flag of, logo of, seal of, symbolises, etc.: item of which the image is a symbol
7. IMO ship number (wd:P458 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P458: identifier for a ship, ship owner or ship manager per the International Maritime Organization / is subproperty of fleet or registration number
8. Admiralty number (wd:P3562 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P3562: identifier of lighthouses by United Kingdom Hydrographic Office
9. ENI number (wd:P5910 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via European Vessel Identification Number,), also known as European Number of Identification, European Vessel Identification Number,, P5910: European Vessel Identification Number for ships capable of navigating on inland European waters
10. pennant number (wd:P879 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via hull number), also known as hull classification symbol, hull number, pendant number, P879: the number or designation associated with individual ships, often painted on the hull

[Assistant] I'll search for Norwegian country entity.

[Tool]
Top 10 entity alternatives:
1. Norway (wd:Q20), also known as Kingdom of Norway: is instance of sovereign state / country in Northern Europe / country in Northern Europe / country in Northern Europe / country in Northern Europe / is instance of country
2. Norway (wd:Q1913264), also known as Norway, IA, Norway, Iowa: is instance of city in the United States / is instance of city of the United States / city in Iowa, United States
3. Norway (wd:Q2480177), also known as Norway, MI, Norway, Michigan: city in Dickinson County, Michigan, United States / is instance of city of the United States / is instance of city in the United States
4. Kingdom of Norway (wd:Q2196956, matched via Norway), also known as Norway, Norwegian Empire: is instance of historical country / former Kingdom from 872 to 1397
5. Norway (wd:Q3243583), also known as Norway, SC, Norway, South Carolina: is instance of town in the United States / town in South Carolina
6. Norway (wd:Q2734330), also known as Norway, Maine, Norway, ME: is instance of town in the United States / town in Maine, USA
7. Norway (wd:Q2118814), also known as Norway, IN, Norway, Indiana: is instance of census-designated place in the United States / is instance of census-designated place / census-designated place in Indiana
8. Kingdom of Norway (wd:Q2597352, matched via Norway), also known as Norway, Norwegian Kingdom: short-lived monarchy in Northern Europe (1814) / is instance of historical country
9. Norway (wd:Q944765), also known as Norway, New York, Norway, NY: is instance of town in the United States / is instance of town of New York / town in New York, USA
10. Norway (wd:Q3046928), also known as Norway, WI: is instance of civil town of Wisconsin / town in Wisconsin, USA

[Assistant] I'll craft a SPARQL query to find items that are instances of ship (Q11446) or subclasses, have service entry (wdt:P729) between 1939-01-01 and 1946-12-31, and have country of registry (wdt:P8047) Norway (wd:Q20) or country (wdt:P17) Norway, or flagged as Norwegian. I need to verify how ships are represented—some are instances of "ship" or subclasses like "warship" (Q?). Let's search for items with P729 and country of registry Norway to see what properties are used.

[Tool]
Got 50 rows and 3 columns, showing the first 5 and last 5 rows below:
| s                               | sLabel               | date                                |
| ------------------------------- | -------------------- | ----------------------------------- |
| Deneb (wd:Q103929850)           | Deneb (en)           | 1942-03-01T00:00:00Z (xsd:dateTime) |
| Capella (wd:Q104502902)         | Capella (en)         | 1945-06-01T00:00:00Z (xsd:dateTime) |
| MS Cometa (wd:Q104521267)       | MS Cometa (en)       | 1941-07-01T00:00:00Z (xsd:dateTime) |
| SS Brant County (wd:Q104530343) | SS Brant County (en) | 1945-03-01T00:00:00Z (xsd:dateTime) |
| MS Vela (wd:Q104534562)         | MS Vela (en)         | 1946-10-01T00:00:00Z (xsd:dateTime) |
| ...                             | ...                  | ...                                 |
| wd:Q19380693                    |                      | 1946-01-01T00:00:00Z (xsd:dateTime) |
| wd:Q19380702                    |                      | 1940-01-01T00:00:00Z (xsd:dateTime) |
| Haugesund (wd:Q19380704)        | Haugesund (en)       | 1942-01-01T00:00:00Z (xsd:dateTime) |
| Jylland (wd:Q19380712)          | Jylland (en)         | 1943-01-01T00:00:00Z (xsd:dateTime) |
| wd:Q19380717                    |                      | 1942-01-01T00:00:00Z (xsd:dateTime) |

[Assistant] Now I'll run a SPARQL query that finds items with a service entry (wdt:P729) between 1939-01-01 and 1946-12-31, that are ships (instance of a class that is subclass of ship, wd:Q11446), and that have Norway as country of registry (wdt:P8047) or country (wdt:P17). I'll request the item IRIs, optional English labels, and the service entry dates.

[Tool]
Got 94 rows and 3 columns, showing the first 5 and last 5 rows below:
| ship                        | shipLabel         | serviceEntry                        |
| --------------------------- | ----------------- | ----------------------------------- |
| Kvalsund I (wd:Q12716671)   | Kvalsund I (en)   | 1939-01-01T00:00:00Z (xsd:dateTime) |
| Bastø II (wd:Q23042441)     | Bastø II (en)     | 1939-01-01T00:00:00Z (xsd:dateTime) |
| Andenes (wd:Q83647303)      | Andenes (en)      | 1939-01-01T00:00:00Z (xsd:dateTime) |
| wd:Q11987366                |                   | 1939-01-01T00:00:00Z (xsd:dateTime) |
| MS Bess (wd:Q11987498)      | MS Bess (en)      | 1939-01-01T00:00:00Z (xsd:dateTime) |
| ...                         | ...               | ...                                 |
| wd:Q19380693                |                   | 1946-01-01T00:00:00Z (xsd:dateTime) |
| MS Fjordbris (wd:Q19380684) | MS Fjordbris (en) | 1946-01-01T00:00:00Z (xsd:dateTime) |
| MS Vela (wd:Q104534562)     | MS Vela (en)      | 1946-10-01T00:00:00Z (xsd:dateTime) |
| MS Mercur (wd:Q104603040)   | MS Mercur (en)    | 1946-12-01T00:00:00Z (xsd:dateTime) |
| Mildrid (wd:Q116552998)     | Mildrid (en)      | 1946-12-12T00:00:00Z (xsd:dateTime) |

[Assistant]
Step-by-step plan and reasoning before running/after running each KG function call:

1) Goal: find the correct property for "entered service / commissioned".
- Reasoning before call: I expect Wikidata to have a property like "service entry" / "commissioned" and need its identifier to filter dates.
- Action: search for properties related to "commissioned entered service ship".

(Calling functions.search_property)

[Tool]
Top 10 property alternatives:
1. vessel class (wd:P289 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via ship class), also known as class of vessel, ship class, spacecraft class, submarine class, watercraft class, etc.: series of vessels or other watercraft built to the same design of which this vessel is a member / is subproperty of instance of
2. member of the crew of (wd:P5096 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via served aboard), also known as crewmember of, crew of, member of crew, served aboard, ship appointments, etc.: person who has been a member of a crew associated with the ... crew member (P1029), backup or reserve team or crew (P3015) / person who has been a member of a crew associated with the ... crew member (P1029), backup or reserve team or crew (P3015) / is subproperty of member of
3. created for (wd:P9883 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via commissioned for), also known as cause of creation, commissioned for, made for, occasion, on the occasion of, etc.: a work, event, etc. for which the subject work was created ... was created for; a film that a screenplay was written for)
4. vessel (wd:P1876 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via ship), also known as boat, craft, orbiter, ship, spacecraft, etc.: vessel involved in this mission, navigation or event / vessel involved in this mission, voyage or event
5. service entry (wd:P729 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via commissioned), also known as commissioned, date of service entry, deployment date, entered service, entry to service, etc.: date or point in time on which a piece or class of equipment entered operational service / date on which a piece or class of equipment entered operational service / is subproperty of start time
6. Admiralty number (wd:P3562 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P3562: identifier of lighthouses by United Kingdom Hydrographic Office
7. volume as quantity (wd:P2234 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via tonnage), also known as fluid capacity, liquid capacity, quantity as volume, spatial volume, tonnage, etc.: quantity of three-dimensional space / quantity of three-dimensional space
8. USCG MIC (wd:P9411 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as United States Coast Guard  Manufacturer's Identification Code, United States Coast Guard MIC, USCG Manufacturer's Identification Code, U.S. Coast Guard  Manufacturer's Identification Code, U.S. Coast Guard MIC, etc.: United States Coast Guard Manufacturer's (of boat) Identification Code ("MIC")
9. armament (wd:P520 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via ship armament), also known as armed with, ship armament, weapon, wields, P520: equippable weapon item for the subject / equippable weapon item for the subject / equippable weapon item for the subject / is subproperty of has facility / is subproperty of facility
10. commissioned by (wd:P88 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as built for, client, commissioner, developer, made for, etc.: person or organisation that commissioned this work / person or organization that commissioned this work / person or organization that commissioned this work

[Assistant] Now I'll execute the final SPARQL query that selects distinct ships that have a service entry date between 1939-01-01 and 1946-12-31, are typed as ships (instance of a class that is a subclass of Q11446), and have Norway as country of registry (P8047) or country (P17). I will request the ship IRIs, optional English labels, and the service entry dates, ordered by date.

[Tool]
Got 92 rows and 3 columns, showing the first 5 and last 5 rows below:
| ship                      | shipLabel       | serviceEntry                        |
| ------------------------- | --------------- | ----------------------------------- |
| Kvalsund I (wd:Q12716671) | Kvalsund I (en) | 1939-01-01T00:00:00Z (xsd:dateTime) |
| Bastø II (wd:Q23042441)   | Bastø II (en)   | 1939-01-01T00:00:00Z (xsd:dateTime) |
| Andenes (wd:Q83647303)    | Andenes (en)    | 1939-01-01T00:00:00Z (xsd:dateTime) |
| wd:Q11987366              |                 | 1939-01-01T00:00:00Z (xsd:dateTime) |
| MS Bess (wd:Q11987498)    | MS Bess (en)    | 1939-01-01T00:00:00Z (xsd:dateTime) |
| ...                       | ...             | ...                                 |
| Talabot (wd:Q83647731)    | Talabot (en)    | 1946-01-01T00:00:00Z (xsd:dateTime) |
| Balaena (wd:Q11968302)    | Balaena (en)    | 1946-01-01T00:00:00Z (xsd:dateTime) |
| MS Vela (wd:Q104534562)   | MS Vela (en)    | 1946-10-01T00:00:00Z (xsd:dateTime) |
| MS Mercur (wd:Q104603040) | MS Mercur (en)  | 1946-12-01T00:00:00Z (xsd:dateTime) |
| Mildrid (wd:Q116552998)   | Mildrid (en)    | 1946-12-12T00:00:00Z (xsd:dateTime) |

[Tool] Stopping


PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT ?item ?itemLabel WHERE {
  ?item wdt:P31 wd:Q5185279 .
  ?item wdt:P6216 wd:Q19652 .
  OPTIONAL {
    ?item wdt:P407 ?language .
  }
  FILTER ( ! BOUND( ?language ) || ?language = wd:Q1860 ) FILTER NOT EXISTS {
    ?item wdt:P51 ?audio .
  }
  OPTIONAL {
    ?item rdfs:label ?itemLabel FILTER ( lang( ?itemLabel ) = "en" )
  }
}
LIMIT 10000

Using entities:
English (wd:Q1860), also known as English (language), English language, English-language, English the Global Language, The English language
public domain (wd:Q19652), also known as 🅮, DP, out of copyright, PD
poem (wd:Q5185279), also known as poems, poetry

Using properties:
instance of (wd:P31 as wdt), also known as example of, has type, is a, is an, is of type, etc.
language of work or name (wd:P407 as wdt), also known as audio language, available in, broadcasting language, language, language of name, etc.
audio (wd:P51 as wdt), also known as audio file, audio recording, audio sample, recording, song, etc.
copyright status (wd:P6216 as wdt), also known as copyrighted, copyright restriction, P6216

Got 3,583 rows and 2 columns, showing the first 5 and last 5 rows below:
| item                                                                                | itemLabel                                                                                |
| -------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| Death’s Ramble (wd:Q100774453)                                                                     | Death’s Ramble (en)                                                                      |
| Gerontion (wd:Q10289249)                                                                           | Gerontion (en)                                                                           |
| Endimion & Phœbe (wd:Q104450438)                                                                   | Endimion & Phœbe (en)                                                                    |
| Junior Yell (wd:Q104451306)                                                                        | Junior Yell (en)                                                                         |
| Philadelphia Rosary (wd:Q104591336)                                                                | Philadelphia Rosary (en)                                                                 |
| ...                                                                                | ...                                                                                |
| The Land (wd:Q96409415)                                                                            | The Land (en)                                                                            |
| To the most Learned Pharmacopolitan, and Excellent Politician, Mr. Esdras Barnivelt (wd:Q98031981) | To the most Learned Pharmacopolitan, and Excellent Politician, Mr. Esdras Barnivelt (en) |
| Horace, Epod. IV. imitated. By Sir James Baker, Kt. to Lord C------n (wd:Q98033180)                | Horace, Epod. IV. imitated. By Sir James Baker, Kt. to Lord C------n (en)                |
| Poser for Mary (wd:Q98844687)                                                                      | Poser for Mary (en)                                                                      |
| The Fire on London Bridge, &c. (wd:Q99428947)                                                      | The Fire on London Bridge, &c. (en)                                                      |

Answer:
I ran the SPARQL query above. It returns 3,583 poems that meet the criteria (instance of poem; copyright status = public domain; language is English or no language specified; and no audio recording via property P51). Examples (item IRI and English label) from the results include:
- wd:Q100774453 — Death’s Ramble
- wd:Q10289249 — Gerontion
- wd:Q104450438 — Endimion & Phœbe
- wd:Q104451306 — Junior Yell
- wd:Q104591336 — Philadelphia Rosary

Notes and caveats:
- "In the public domain" is detected via wdt:P6216 = wd:Q19652 (public domain).
- "English or no specified language" is implemented by allowing either wdt:P407 = wd:Q1860 (English) or no wdt:P407 statement at all.
- "Do not have an audio recording" is implemented by requiring that there is no wdt:P51 statement for the item. Some works may have audio files on Wikimedia Commons that are not linked via P51; those would not be detected by this query.

If you want the full list (all IRIs and labels), I can provide it (it is ~3,583 items), or I can refine the query (for example to include translations, other language variants, or to also check for linked audio files on Commons).

Which poems are in the public domain, either in English or with no specified language, and do not have an audio recording?

[System]
You are a question answering assistant. Your job is to generate a SPARQL query to answer a given user question.

You should follow a step-by-step approach to generate the SPARQL query:
1. Determine possible entities and properties implied by the user question.
2. Search for the entities and properties in the knowledge graphs. Where applicable, constrain the searches with already identified entities and properties.
3. Gradually build up the SPARQL query using the identified entities and properties. Start with simple queries and add more complexity as needed. Execute intermediate queries to get feedback and to verify your assumptions. You may need to refine or rethink your current plan based on the query results and go back to step 2 if needed, possibly multiple times.
4. Use the answer or cancel function to finalize your answer and stop the generation process.

You have access to the following knowledge graphs:
wikidata at http://localhost:7001 without notes

You are provided with the following notes across all knowledge graphs:
No notes available

You can use the following SPARQL prefixes implicitly in all functions:
cc: <http://creativecommons.org/ns#
data: <https://www.wikidata.org/wiki/Special:EntityData/
dct: <http://purl.org/dc/terms/
geo: <http://www.opengis.net/ont/geosparql#
geof: <http://www.opengis.net/def/function/geosparql/
imdb: <https://www.imdb.com/
math: <http://www.w3.org/2005/xpath-functions/math#
ontolex: <http://www.w3.org/ns/lemon/ontolex#
owl: <http://www.w3.org/2002/07/owl#
p: <http://www.wikidata.org/prop/
pq: <http://www.wikidata.org/prop/qualifier/
pqn: <http://www.wikidata.org/prop/qualifier/value-normalized/
pqv: <http://www.wikidata.org/prop/qualifier/value/
pr: <http://www.wikidata.org/prop/reference/
prn: <http://www.wikidata.org/prop/reference/value-normalized/
prov: <http://www.w3.org/ns/prov#
prv: <http://www.wikidata.org/prop/reference/value/
ps: <http://www.wikidata.org/prop/statement/
psn: <http://www.wikidata.org/prop/statement/value-normalized/
psv: <http://www.wikidata.org/prop/statement/value/
qfn: <http://qlever.cs.uni-freiburg.de/function#
ql: <http://qlever.cs.uni-freiburg.de/builtin-functions/
qlss: <https://qlever.cs.uni-freiburg.de/spatialSearch/
rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: <http://www.w3.org/2000/01/rdf-schema#
ref: <http://www.wikidata.org/reference/
s: <http://www.wikidata.org/entity/statement/
schema: <http://schema.org/
skos: <http://www.w3.org/2004/02/skos/core#
v: <http://www.wikidata.org/value/
wd: <http://www.wikidata.org/entity/
wdno: <http://www.wikidata.org/prop/novalue/
wdt: <http://www.wikidata.org/prop/direct/
wdtn: <http://www.wikidata.org/prop/direct-normalized/
wikibase: <http://wikiba.se/ontology#
xsd: <http://www.w3.org/2001/XMLSchema#
foaf: <http://xmlns.com/foaf/0.1/
dc: <http://purl.org/dc/elements/1.1/
gn: <http://www.geonames.org/ontology#
bd: <http://www.bigdata.com/rdf#
hint: <http://www.bigdata.com/queryHints#
qb: <http://purl.org/linked-data/cube#
void: <http://rdfs.org/ns/void#

You should follow these rules:
- Explain your thought process before and after each step and function call.
- Do not just use or make up entity or property identifiers without verifying their existence in the knowledge graphs first.
- Do not use "SERVICE wikibase:label { bd:serviceParam wikibase:language ..." in SPARQL queries. It is not SPARQL standard and unsupported by the used QLever SPARQL endpoints. Use rdfs:label or similar properties to get labels instead.
- Always execute your final SPARQL query before giving an answer to make sure it returns the expected results.
- The SPARQL query should always return the actual identifiers / IRIs of the items in its result. It additionally may return labels or other human-readable information, but they are optional and should be put within optional clauses unless explicitly requested by the user.
- Do not stop early if there are still obvious improvements to be made to the SPARQL query. For example, keep refining your SPARQL query if its result contains irrelevant items or is missing items you expected.
- Do not perform additional computation (e.g. filtering, sorting, calculations) on the result of the SPARQL query to determine the answer. All computation should be done solely within SPARQL.
- For questions with a "True" or "False" answer the SPARQL query should be an ASK query.

[User] Which poems are in the public domain, either in English or with no specified language, and do not have an audio recording?

[Assistant] Step 1: I'll search for relevant entity and properties: "poem" entity, properties for "language of work or name", "copyright status", and ways to detect presence of an audio recording (e.g., property linking to audio files). I'll start by searching for the "poem" entity and the "copyright status" property. I'll explain each step and run checks.

[Tool]
Top 10 entity alternatives:
1. poem (wd:Q5185279), also known as poems, poetry: form of literature, work of poetry, often composed of verses / is instance of literary form / is subclass of literary work / is instance of poetic form / is subclass of poetry / is subclass of Poetry
2. long poem (wd:Q1782649, matched via poem), also known as poem: is instance of poetry genre / is instance of poetic form / poetry genre, poetic form / is subclass of poem
3. NPNT (wd:Q18053814, matched via POEM), also known as EGFL6L, nephronectin, POEM: protein-coding gene in the species Homo sapiens / is subclass of protein-coding gene / is instance of gene
4. The Sorrow of the Winds (wd:Q19099527, matched via Poem), also known as Poem: 1912
5. The Summer Moon (wd:Q19100286, matched via Poem), also known as Poem: is instance of version, edition or translation / 1912
6. The Morning Pool (wd:Q19094277, matched via Poem), also known as Poem: is instance of version, edition or translation / 1912
7. The Maze of Sleep (wd:Q19093692, matched via Poem), also known as Poem: is instance of version, edition or translation / 1912
8. poem (wd:Q19415001): poem written by Mostafa Saadeq Al-Rafe'ie / is instance of poem
9. Poem (wd:Q19423189), also known as Poetry: Poem written by Abdullah ibn al-Mu'tazz / Poetry by Abdullah ibn al-Mu'tazz / is instance of poem
10. Poem (wd:Q2893205): 1981 album by Bridges / is instance of album

[Assistant] I'll inspect the "poem" entity wd:Q5185279 to verify its usage.

[Tool]
Got 480 rows and 3 columns, showing the first 10 rows below:
| subject            | property                               | object                                                                                |
| ------------------ | -------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- |
| poem (wd:Q5185279) | instance of (wdt:P31)                  | literary form (wd:Q4263830)                                                                                |
| poem (wd:Q5185279) | Google Knowledge Graph ID (wdtn:P2671) | <http://g.co/kg/g/120t9g88>                                                                                |
| poem (wd:Q5185279) | Commons category (wdt:P373)            | Poetry                                                                                |
| poem (wd:Q5185279) | image (wdt:P18)                        | <http://commons.wikimedia.org/wiki/Special:FilePath/Alexander%20Blok%20-%20Noch%2C%20ulica%2C%20fonar%2C%20apteka.jpg> |
| poem (wd:Q5185279) | subclass of (wdt:P279)                 | poetry (wd:Q482)                                                                                |
| poem (wd:Q5185279) | described by source (wdt:P1343)        | Kazakhstan. National encyclopedia (wd:Q4208106)                                                                        |
| poem (wd:Q5185279) | different from (wdt:P1889)             | poetry (wd:Q482)                                                                                |
| poem (wd:Q5185279) | topic's main category (wdt:P910)       | wd:Q7468787                                                                                |
| poem (wd:Q5185279) | has characteristic (wdt:P1552)         | rhyme (wd:Q178715)                                                                                |
| poem (wd:Q5185279) | MeSH tree code (wdtn:P672)             | <http://id.nlm.nih.gov/mesh/V02.712>                                                                                |
| ...                | ...                                    | ...                                                                                |

[Assistant] I'll search for properties related to copyright, public domain, and audio recordings.

[Tool]
Top 10 property alternatives:
1. Letterboxd user ID (wd:P12384 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via composer Letterboxd), also known as composer Letterboxd, P12384: identifier for a user on Letterboxd
2. Library of Congress Medium of Performance Thesaurus ID (wd:P8516 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via Library of Congress Music Medium of Performance Thesaurus ID), also known as LC Medium of Performance Thesaurus for Music ID, LCMPT ID, Library of Congress Medium of Performance Thesaurus for Music ID, Library of Congress Music Medium of Performance Thesaurus ID, P8516: identifier for a term in the Library of Congress Medium of Performance Thesaurus for Music
3. audio (wd:P51 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via recording), also known as audio file, audio recording, audio sample, recording, song, etc.: relevant sound. If available, use a more specific property. Samples: "spoken text audio" (P989), "pronunciation audio" (P443) / relevant sound / relevant sound
4. recordist (wd:P10893 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via audio recordist), also known as audio recorder, audio recordist, recorded by, video recorder, video recordist, etc.: the person or other agent who recorded the audio and/or video for this file
5. Global Music Rights work ID (wd:P7955 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as GMR work ID, P7955: identifier for a musical work in Global Music Rights' repertory
6. featured track(s) (wd:P10664 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via audio tracks), also known as audio track, audio tracks, featured track, music track, music tracks, etc.: soundtrack of this audiovisual work
7. Studio di Fonologia Musicale RAI person ID (wd:P9134 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P9134: identifier for a person in the website of the Studio di Fonologia Musicale RAI
8. audio transcription (wd:P9533 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as transcription of audio, P9533: transcription of the word/text being spoken in this file
9. AllMusic song ID (wd:P1730 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via recording ID (AllMusic)), also known as AllMusic recording ID, AllMusic track ID, recording ID (AllMusic), track ID (AllMusic), P1730: identifier for a song in AllMusic database
10. Mertens-Pack 3 Number (wd:P11399 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via MP3 Online ID), also known as Mertens-Pack 3 ID, Mertens-Pack 3 Online Database ID, Mertens-Pack3 Online Database ID, Mertens-Pack ID, Mertens-Pack Number, etc.: ID for a work on the Mertens-Pack 3 Online Database

[Tool]
Top 10 property alternatives:
1. copyright status (wd:P6216 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as copyrighted, copyright restriction, P6216: copyright status for intellectual creations like works of art, publications, software, etc.
2. copyright status as a creator (wd:P7763 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via copyright status of works), also known as copyright status as creator, copyright status of creator's works, copyright status of works, statut des droits d'auteur du createur, P7763: states if the body of work published during the lifetime of this creator is still copyrighted or in the public domain
3. copyright registration (wd:P9976 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as USA copyright registration, US copyright registration, P9976: ID assigned by the US copyright office recording the ... for a creative work, or the renewal of such a copyright
4. copyright license (wd:P275 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as content licence, content license, copyright licence, licence, license, etc.: licence under which this copyrighted work is released / licence under which this copyrighted work is released / license under which this copyrighted work is released
5. copyright holder (wd:P3931 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via copyright ‘owner’), also known as copyright ‘owner’, copyright owner, licensor, proprietor, P3931: person or organisation who holds the copyright of a work according to the Berne Convention / is subproperty of owned by
6. copyright exemption (wd:P7152 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as P7152: copyright exemption this file is covered by
7. phonographic copyright (wd:P12456 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as ℗, (P), P12456: person or organization that holds the phonographic copyright
8. public domain date (wd:P3893 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via copyright end date), also known as copyright end date, PD date, P3893: date the item enters into the public domain in a jurisdiction
9. digital rights management system (wd:P1032 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via copy protection system), also known as copy protection mechanism, copy protection system, DRM mechanism, DRM system, P1032: technologies  to control the use of digital content and devices after sale
10. RightsStatements.org statement according to source website (wd:P6426 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via rights), also known as rights, rights statement, RS, standardized rights statement, P6426: standardized RightsStatements.org rights statement that owning institution or similar authority has applied to this work

[Assistant] I'll search for the "public domain" item and check its identifier.

[Tool]
Top 10 entity alternatives:
1. public domain (wd:Q19652), also known as 🅮, DP, out of copyright, PD: no exclusive intellectual property rights apply / no exclusive intellectual property rights apply / is instance of copyright status / is instance of legal concept / is subclass of public good
2. public sphere (wd:Q17945, matched via public domain), also known as public domain, publicity, public life: is subclass of social life / area in social life
3. public domain (wd:Q5871222): lands considered to belong to the whole community / is subclass of estate / is subclass of Estate
4. Public Domain (wd:Q7758689): is instance of online magazine / online magazine
5. Public Domain (wd:Q20813938): 2000 album by Dave Alvin / is instance of album / album by Dave Alvin / album by Dave Alvin
6. The Public Domain (wd:Q19824841, matched via Public Domain), also known as Public Domain: is instance of film / 2015 film
7. Public Domain (wd:Q20200052): is instance of musical group / British band
8. Public Domain (wd:Q7257358): 2003 Canadian film about reality TV directed by Kris Lefcoe / is instance of film
9. public domain (wd:Q15687061): duplicate of Q19652 used to test workaround for QuickStatements limitations / is instance of Wikimedia permanent duplicated page / is instance of Wikimedia permanent duplicate item / is instance of copyright status / is subclass of public good / is subclass of licence / is subclass of license
10. DP (wd:Q59754537, matched via public domain), also known as 00039657154 IPI, 00108158979 IPI, 00506142687 IPI, 00506142981 IPI, 00538373139 IPI, etc.: special purpose artist used for songwriting credits in the public domain / is instance of special purpose artist / has occupation composer / has occupation lyricist / has occupation Lyricist

[Assistant]
We have properties: copyright status (P6216) and audio (P51). The user asks: "Which poems are in the public domain, either in English or with no specified language, and do not have an audio recording?"

So query constraints:
- Items that are instance of poem (P31 wd:Q5185279) OR subclass? Use instance of poem.
- copyright status is public domain (P6216 -> wd:Q19652)
- language of work or name (P407) equals English (wd:Q1860) OR no specified language (i.e., the item has no P407 statement). So include those with P407 = English OR FILTER NOT EXISTS { ?item wdt:P407 ?lang }? But careful: "no specified language" means lacking a P407 property. We'll handle as ( P407 English OR NOT EXISTS P407 ).
- Do not have an audio recording: Items should not have wdt:P51 (audio). So filter for NOT EXISTS { ?item wdt:P51 ?audio }.

Also, ensure these are poems. Might need to include works that are instance of literary work and subclass? But start with P31 = poem.

We must explain thought process before and after each step and function call. And must verify existence of properties used. We already searched and found P51 and P6216 and P407. Let's search property P407.

[Tool]
Top 10 property alternatives:
1. language of work or name (wd:P407 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as audio language, available in, broadcasting language, language, language of name, etc.: language associated with this creative work (such as books, ... (P103) and "languages spoken, written or signed" (P1412)) / language associated with this creative work (such as books, ... (P103) and "languages spoken, written or signed" (P1412)) / language associated with this work or name (for persons use P103 and P1412)
2. creator's signature (wd:P7457 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via name on work), also known as artist's signature on work, monogram on work, name on work, pinxit, sculpsit, etc.: image of the artist's mark on the work that identifies their work / is subproperty of inscription image / is subproperty of image
3. writing language (wd:P6886 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via language of works), also known as language for writing, language of works, language of writings, languages for writing, languages of works, etc.: is subproperty of languages spoken, written or signed / language in which the writer has written their work
4. native label (wd:P1705 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via name in official language), also known as autonym, label in official language, label in original language, name in official language, name in original language, etc.: label for the items in their official language (P37) or their original language (P364) / label for the items in their official language (P37) or their original language (P364) / label for the items in their official language (P37) or their original language (P364) / label for the items in their official language  or their original language / is subproperty of name
5. working title (wd:P1638 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via working name), also known as code name, codename, production name, production title, working name, etc.: temporary name of a product or project used during its development
6. language used (wd:P2936 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via working language), also known as languages used, medium of instruction, used language, uses language, working language, etc.: language widely used (spoken or written) in this place or at this event or organisation
7. present in work (wd:P1441 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via from work), also known as appeared in, appears in, appears in work, character in, featured in work, etc.: this (fictional or fictionalized) entity, place, or person ... P1343 for entities described in non-fictional accounts) / work in which this fictional entity (Q14897293) or historical ... P1343 for entities described in non-fictional accounts)
8. name in native language (wd:P1559 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as native name, P1559: name of a person in their native language / name of a person in their native language / name of a person in their native language / name of a person in their native language / is subproperty of name
9. original language of film or TV show (wd:P364 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via language of the original work), also known as created on language, language of the original work, media language, original language, P364: language in which a film or a performance work was originally ... and songs; use P407 ("language of work or name") instead. / language in which a film or a performance work was originally ... written works; use P407 ("language of work or name") instead. / language in which a film or a performance work was originally ... written works; use P407 ("language of work or name") instead. / is subproperty of language of work or name
10. for work (wd:P1686 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as awarded for work, citation for award, for their work on, nominated for work, P1686: qualifier of award received (P166) to specify the work that an award was given to the creator for / qualifier of award received (P166) to specify the work that an award was given to the creator for

[Assistant]
We have identifiers. Next, build the SPARQL query.

I'll construct a SELECT query returning item IRIs and optional labels and maybe audio presence? But user asked: Which poems are in public domain, either in English or with no specified language, and do not have an audio recording? So return items that meet all constraints.

We must ensure copyright status property P6216 value equals public domain (wd:Q19652). Let's also consider that some works may have copyright status qualifiers or multiple statuses; use wdt:P6216 ?status FILTER (?status = wd:Q19652). Good.

We also want instance of poem: wdt:P31 wd:Q5185279. But some works might be "poem" via subclass of poem; but typical is P31. Could include subclass? Use either P31/wdt:P31/wdt:P279? But spec says do not use property ids without verifying; we used P31 and Q5185279 earlier.

Now language: either P407 wd:Q1860 or no P407. Implementation: FILTER ( !BOUND(?language) || ?language = wd:Q1860 ) but BOUND for optional. Use OPTIONAL { ?item wdt:P407 ?language } then FILTER( !BOUND(?language) || ?language = wd:Q1860 )

Audio absence: ensure no wdt:P51. Use FILTER NOT EXISTS { ?item wdt:P51 ?audio }.

Also consider that some items might be instances of poem but also have audio via Commons file links instead of P51. The property P18 image etc. But user specifically said "do not have an audio recording" - we rely on P51 being used to link audio. There may be audio files on Commons but not linked via P51. But follow asked constraints.

We must execute intermediate queries? The developer instructions require to explain thought process before and after each step and function call. So we must narrate before calling the query. We'll then call functions.execute with the SPARQL. And then after results, finalize with functions.answer including final SPARQL and answer string summarizing results.

Also "Always execute your final SPARQL query before giving an answer" — so final SPARQL must be executed. We will execute the constructed query via functions.execute. Let's prepare the query.

SPARQL skeleton:

SELECT ?item ?itemLabel WHERE {
  ?item wdt:P31 wd:Q5185279.
  ?item wdt:P6216 wd:Q19652.
  OPTIONAL { ?item wdt:P407 ?language. }
  FILTER ( !bound(?language) || ?language = wd:Q1860 )
  FILTER NOT EXISTS { ?item wdt:P51 ?audio. }
  OPTIONAL { ?item rdfs:label ?itemLabel FILTER (lang(?itemLabel) = "en") }
}

Order limit maybe? No limit required. Could produce many results. Execute.

We must also show thought process before and after. We'll narrate.

Let's call functions.execute.
I will run a SPARQL query to find items that are instances of "poem" (wd:Q5185279), have copyright status "public domain" (wd:Q19652), have either language English (wd:Q1860) or no specified language (no wdt:P407), and do not have an audio (no wdt:P51). I will request the item IRIs and English labels (if available). Now I'll execute the query.

[Tool]
Got 3,583 rows and 2 columns, showing the first 5 and last 5 rows below:
| item                                                                                | itemLabel                                                                                |
| -------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| Death’s Ramble (wd:Q100774453)                                                                     | Death’s Ramble (en)                                                                      |
| Gerontion (wd:Q10289249)                                                                           | Gerontion (en)                                                                           |
| Endimion & Phœbe (wd:Q104450438)                                                                   | Endimion & Phœbe (en)                                                                    |
| Junior Yell (wd:Q104451306)                                                                        | Junior Yell (en)                                                                         |
| Philadelphia Rosary (wd:Q104591336)                                                                | Philadelphia Rosary (en)                                                                 |
| ...                                                                                | ...                                                                                |
| The Land (wd:Q96409415)                                                                            | The Land (en)                                                                            |
| To the most Learned Pharmacopolitan, and Excellent Politician, Mr. Esdras Barnivelt (wd:Q98031981) | To the most Learned Pharmacopolitan, and Excellent Politician, Mr. Esdras Barnivelt (en) |
| Horace, Epod. IV. imitated. By Sir James Baker, Kt. to Lord C------n (wd:Q98033180)                | Horace, Epod. IV. imitated. By Sir James Baker, Kt. to Lord C------n (en)                |
| Poser for Mary (wd:Q98844687)                                                                      | Poser for Mary (en)                                                                      |
| The Fire on London Bridge, &c. (wd:Q99428947)                                                      | The Fire on London Bridge, &c. (en)                                                      |

[Assistant] I will now provide the final SPARQL query (the one I executed) and summarize the results. I will include the query, the number of matching poems returned (3,583), and a few example items from the results. I also note limitations: audio absence is determined by missing P51 statements and "no specified language" means no P407 statement.

[Tool] Stopping


PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
PREFIX p: <http://www.wikidata.org/prop/>
PREFIX ps: <http://www.wikidata.org/prop/statement/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?country ?countryLabel ?capital ?capitalLabel WHERE {
  ?country wdt:P31 wd:Q3624078 .
  ?country p:P36 ?capStmt .
  ?capStmt ps:P36 ?capital .
  FILTER NOT EXISTS {
    ?capStmt pq:P582 ?endTime .
  }
  OPTIONAL {
    ?country rdfs:label ?countryLabel .
    FILTER ( LANG( ?countryLabel ) = "en" )
  }
  OPTIONAL {
    ?capital rdfs:label ?capitalLabel .
    FILTER ( LANG( ?capitalLabel ) = "en" )
  }
}
ORDER BY ?countryLabel

Using entities:
sovereign state (wd:Q3624078), also known as country, nation, sovereign country, sovereign nation, Westphalian state

Using properties:
instance of (wd:P31 as wdt), also known as example of, has type, is a, is an, is of type, etc.
capital (wd:P36 as ps/p), also known as administrative capital, administrative center, administrative centre, administrative headquarters, administrative seat, etc.
end time (wd:P582 as pq), also known as abolished, cease date, cease operation, cease time, closed, etc.

Got 209 rows and 4 columns, showing the first 5 and last 5 rows below:
| country               | countryLabel     | capital                     | capitalLabel          |
| --------------------- | ---------------- | --------------------------- | --------------------- |
| Afghanistan (wd:Q889) | Afghanistan (en) | Kabul (wd:Q5838)            | Kabul (en)            |
| Albania (wd:Q222)     | Albania (en)     | Tirana (wd:Q19689)          | Tirana (en)           |
| Algeria (wd:Q262)     | Algeria (en)     | Algiers (wd:Q3561)          | Algiers (en)          |
| Andorra (wd:Q228)     | Andorra (en)     | Andorra la Vella (wd:Q1863) | Andorra la Vella (en) |
| Angola (wd:Q916)      | Angola (en)      | Luanda (wd:Q3897)           | Luanda (en)           |
| ...                   | ...              | ...                         | ...                   |
| Vietnam (wd:Q881)     | Vietnam (en)     | Hanoi (wd:Q1858)            | Hanoi (en)            |
| Yemen (wd:Q805)       | Yemen (en)       | Aden (wd:Q131694)           | Aden (en)             |
| Yemen (wd:Q805)       | Yemen (en)       | Sanaa (wd:Q2471)            | Sanaa (en)            |
| Zambia (wd:Q953)      | Zambia (en)      | Lusaka (wd:Q3881)           | Lusaka (en)           |
| Zimbabwe (wd:Q954)    | Zimbabwe (en)    | Harare (wd:Q3921)           | Harare (en)           |

Answer: I executed the query above. It returns country–capital pairs for items that are instance of sovereign state (wd:Q3624078) and whose capital statement does not have an end time (pq:P582). Labels for country and capital are included in English and results are ordered by country label. The query returned 209 rows (country–capital pairs).

What are the countries and their capitals for all sovereign states, excluding those where the capital has an end date? Please include the labels for both the countries and their capitals and order by country label.

[System]
You are a question answering assistant. Your job is to generate a SPARQL query to answer a given user question.

You should follow a step-by-step approach to generate the SPARQL query:
1. Determine possible entities and properties implied by the user question.
2. Search for the entities and properties in the knowledge graphs. Where applicable, constrain the searches with already identified entities and properties.
3. Gradually build up the SPARQL query using the identified entities and properties. Start with simple queries and add more complexity as needed. Execute intermediate queries to get feedback and to verify your assumptions. You may need to refine or rethink your current plan based on the query results and go back to step 2 if needed, possibly multiple times.
4. Use the answer or cancel function to finalize your answer and stop the generation process.

You have access to the following knowledge graphs:
wikidata at http://localhost:7001 without notes

You are provided with the following notes across all knowledge graphs:
No notes available

You can use the following SPARQL prefixes implicitly in all functions:
cc: <http://creativecommons.org/ns#
data: <https://www.wikidata.org/wiki/Special:EntityData/
dct: <http://purl.org/dc/terms/
geo: <http://www.opengis.net/ont/geosparql#
geof: <http://www.opengis.net/def/function/geosparql/
imdb: <https://www.imdb.com/
math: <http://www.w3.org/2005/xpath-functions/math#
ontolex: <http://www.w3.org/ns/lemon/ontolex#
owl: <http://www.w3.org/2002/07/owl#
p: <http://www.wikidata.org/prop/
pq: <http://www.wikidata.org/prop/qualifier/
pqn: <http://www.wikidata.org/prop/qualifier/value-normalized/
pqv: <http://www.wikidata.org/prop/qualifier/value/
pr: <http://www.wikidata.org/prop/reference/
prn: <http://www.wikidata.org/prop/reference/value-normalized/
prov: <http://www.w3.org/ns/prov#
prv: <http://www.wikidata.org/prop/reference/value/
ps: <http://www.wikidata.org/prop/statement/
psn: <http://www.wikidata.org/prop/statement/value-normalized/
psv: <http://www.wikidata.org/prop/statement/value/
qfn: <http://qlever.cs.uni-freiburg.de/function#
ql: <http://qlever.cs.uni-freiburg.de/builtin-functions/
qlss: <https://qlever.cs.uni-freiburg.de/spatialSearch/
rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: <http://www.w3.org/2000/01/rdf-schema#
ref: <http://www.wikidata.org/reference/
s: <http://www.wikidata.org/entity/statement/
schema: <http://schema.org/
skos: <http://www.w3.org/2004/02/skos/core#
v: <http://www.wikidata.org/value/
wd: <http://www.wikidata.org/entity/
wdno: <http://www.wikidata.org/prop/novalue/
wdt: <http://www.wikidata.org/prop/direct/
wdtn: <http://www.wikidata.org/prop/direct-normalized/
wikibase: <http://wikiba.se/ontology#
xsd: <http://www.w3.org/2001/XMLSchema#
foaf: <http://xmlns.com/foaf/0.1/
dc: <http://purl.org/dc/elements/1.1/
gn: <http://www.geonames.org/ontology#
bd: <http://www.bigdata.com/rdf#
hint: <http://www.bigdata.com/queryHints#
qb: <http://purl.org/linked-data/cube#
void: <http://rdfs.org/ns/void#

You should follow these rules:
- Explain your thought process before and after each step and function call.
- Do not just use or make up entity or property identifiers without verifying their existence in the knowledge graphs first.
- Do not use "SERVICE wikibase:label { bd:serviceParam wikibase:language ..." in SPARQL queries. It is not SPARQL standard and unsupported by the used QLever SPARQL endpoints. Use rdfs:label or similar properties to get labels instead.
- Always execute your final SPARQL query before giving an answer to make sure it returns the expected results.
- The SPARQL query should always return the actual identifiers / IRIs of the items in its result. It additionally may return labels or other human-readable information, but they are optional and should be put within optional clauses unless explicitly requested by the user.
- Do not stop early if there are still obvious improvements to be made to the SPARQL query. For example, keep refining your SPARQL query if its result contains irrelevant items or is missing items you expected.
- Do not perform additional computation (e.g. filtering, sorting, calculations) on the result of the SPARQL query to determine the answer. All computation should be done solely within SPARQL.
- For questions with a "True" or "False" answer the SPARQL query should be an ASK query.

[User] What are the countries and their capitals for all sovereign states, excluding those where the capital has an end date? Please include the labels for both the countries and their capitals and order by country label.

[Assistant] I will first find the Wikidata item for "sovereign state" and then identify the properties used for capitals (commonly wdt:P36). I'll verify how capitals are modeled and how end dates for capitals are represented (likely via qualifiers like "end time" P582 on the statement). Then I'll build a SPARQL query that retrieves countries that are instances of sovereign state and their capital cities, excluding any where the capital statement has an end time. I'll test intermediate queries to confirm the property IDs. I'll explain each step and show the query results.

[Tool]
Top 10 entity alternatives:
1. sovereign state (wd:Q3624078), also known as country, nation, sovereign country, sovereign nation, Westphalian state: political organisation with a centralised independent government / political organisation with a centralised independent government / state that has the highest authority over a territory / is subclass of country / is subclass of state
2. Westphalian sovereignty (wd:Q442402, matched via state sovereignty), also known as state sovereignty, Westphalian system: concept of the sovereignty of nation-states in Europe / is subclass of world order / is instance of model
3. state sovereignty (wd:Q56350990), also known as national sovereignty
4. The Sovereign State (wd:Q7765603): is instance of literary work / book by Anthony Sampson
5. State Sovereignty Day (wd:Q130322685): Day commemorated in honor of the restoration of the ... Republic of Azerbaijan following the Anti-Terror Operation / is instance of holiday
6. Sovereign State of Forvik (wd:Q2011058): micronation founded on Forewick Holm in 2008 by Stuart Hill / is instance of micronation
7. Indonesian Sovereign State Party (wd:Q106361064), also known as Pandai Party: political party in Indonesia
8. Act on the national emblems of the state of Baden-Württemberg (wd:Q123225392, matched via State Sovereign Signs Act), also known as Land Sovereignty Signs Act, State Sovereign Signs Act: German state law on the design and use of the national emblems of the state of Baden-Württemberg / German state law on the design and use of the national emblems of the state of Baden-Württemberg / is instance of state law
9. New Union Treaty (wd:Q218877, matched via Union of Sovereign States), also known as Union of Sovereign States, Union of Soviet Sovereign Republics: is instance of proposed state merger / is instance of document / is instance of concept / draft treaty of 1991
10. Sovereign State of Aeterna Lucina (wd:Q7571613), also known as Aeterna Lucina: is instance of micronation / Micronation

[Assistant] I'll search for the properties "capital" and "end time" in Wikidata to confirm their IDs before building queries.

[Tool]
Top 10 property alternatives:
1. capital of (wd:P1376 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via capital), also known as administrative seat of, capital, county seat for, county seat of, is capital of, etc.: country, state, department, canton or other administrative division of which the municipality is the governmental seat / country, state, department, canton or other administrative division of which the municipality is the governmental seat / country, state, department, canton or other administrative division of which the municipality is the governmental seat / is subproperty of located in the administrative territorial entity
2. capital (wd:P36 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as administrative capital, administrative center, administrative centre, administrative headquarters, administrative seat, etc.: location (city, municipality) of governmental seat of the country, or administrative territorial entity / seat of government of a country, province, state or other type of administrative territorial entity / city of governmental seat of the country, state or administrative subdivision
3. net worth (wd:P2218 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via wealth), also known as declared patrimony, estimated net worth, net wealth, net worth estimate, personal assets, etc.: totality of wealth possessed by a person
4. prize money (wd:P2121 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via money), also known as money, purse, value, P2121: amount in a specific currency / amount in a specific currency
5. currency (wd:P38 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as base currency, used money, P38: is subproperty of uses / currency used by item / currency used by item / currency used by item
6. field of work (wd:P101 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via trade), also known as academic area, academic discipline, academic subject, activity, activity domain, etc.: specialisation of a person or organisation; see P106 for the occupation / specialization of a person or organization; see P106 for the occupation / specialization of a person or organization; see P106 for the occupation / specialization of a person or organization; see P106 for the occupation / is subproperty of interested in
7. industry (wd:P452 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via sector), also known as branch, economic branch, field of action, field of exercise, sector, etc.: specific industry of company or organization / is subproperty of part of
8. total equity (wd:P2137 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via equity), also known as equity, shareholder equity, P2137: amount of equity value for an entity
9. capital cost (wd:P2130 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as budget, cost, unit cost, P2130: amount of money spent on building or producing an object
10. number of matches played/races/starts (wd:P1350 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via caps), also known as appearances, caps, games pitched, games played, gp, etc.: matches or games a player or a team played during an event. ... a player officially appeared in during the whole career. / matches or games a player or a team played during an event. ... a player officially appeared in during the whole career. / by a sports team

[Assistant] Property for end date/time is likely "end time" P582. I'll verify.

[Tool]
Top 10 property alternatives:
1. end time (wd:P582 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as abolished, cease date, cease operation, cease time, closed, etc.: moment when an entity ceases to exist and a statement stops being entirely valid or no longer be true / indicates the time an item ceases to exist or a statement stops being valid / indicates the time an item ceases to exist or a statement stops being valid / is subproperty of point in time
2. start time (wd:P580 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as began, beginning, building date, effective, effectivity, etc.: indicates the time an item begins to exist or a statement starts being valid / indicates the time an item begins to exist or a statement starts being valid / time an entity begins to exist or a statement starts being valid / is subproperty of point in time
3. work period (end) (wd:P2032 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via end time for work), also known as active until, date of activity (end), end date of activity, end time for work, fl. (end), etc.: end of period during which a person or group flourished (fl. = "floruit") in their professional activity / end of period during which a person or group flourished (fl. = "floruit") in their professional activity / is subproperty of end time / is subproperty of floruit
4. duration (wd:P2047 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via time interval), also known as cook time, era, interval, length, length of time, etc.: length of time of an event or process / length of time of an event or process / length of time of an event or process
5. time played (wd:P9140 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as minutes played, P9140: time (usually minutes) played by a participant in a sporting event
6. dissolved, abolished or demolished date (wd:P576 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via time abolished), also known as abolished, abolishment date, ceased date, ceased on, ceased publication, etc.: point in time at which the subject (organisation, building) ...  "discontinued date" (P2669) for stopping a product / date or point in time on which the organisation was dissolved/disappeared or the building demolished / is subproperty of end time
7. end period (wd:P3416 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as until period, P3416: last period in which the statement is still valid (including the period-value)
8. point in time (wd:P585 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via at time), also known as as of, at time, by date, date, during, etc.: date something took place, existed or a statement was true; for providing time use the "refine date" property (P4241) / time and date something took place, existed or a statement was true / time and date something took place, existed or a statement was true / time and date something took place, existed or a statement was true
9. refine date (wd:P4241 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn, matched via specific time), also known as date refinement, exact time, hour, local time, quarter, etc.: qualifier to narrow down the precision of a date not fully specified by the Wikidata time datatype precision field / qualifier to narrow down the precision of a date not fully specified by the Wikidata time datatype precision field
10. time gap (wd:P2911 as pqn/pqv/wdtn/pr/pq/psv/prn/p/prv/ps/wdt/psn), also known as gap, P2911: time gap to winner time (P2781)

[Assistant] I'll run an intermediate query to confirm that capital statements use the statement/qualifier pattern (p:P36, ps:P36, pq:P582) by finding some countries where the capital statement has an end time qualifier.

[Tool]
Got 20 rows and 5 columns, showing the first 5 and last 5 rows below:
| country                                    | countryLabel                      | capital                        | capitalLabel           | endTime                             |
| ------------------------------------------ | --------------------------------- | ------------------------------ | ---------------------- | ----------------------------------- |
| canton of Bourgneuf-en-Retz (wd:Q1000334)  | canton of Bourgneuf-en-Retz (en)  | Bourgneuf-en-Retz (wd:Q765810) | Bourgneuf-en-Retz (en) | 2015-03-21T00:00:00Z (xsd:dateTime) |
| canton of Sainte-Anne-2 (wd:Q1001372)      | canton of Sainte-Anne-2 (en)      | Sainte-Anne (wd:Q386243)       | Sainte-Anne (en)       | 2015-03-21T00:00:00Z (xsd:dateTime) |
| Jeĺski Sieĺsaviet (wd:Q100326102)          | Jeĺski Sieĺsaviet (en)            | Mlynok (wd:Q4298738)           | Mlynok (en)            | 1977-02-25T00:00:00Z (xsd:dateTime) |
| Jeĺski Sieĺsaviet (wd:Q100326102)          | Jeĺski Sieĺsaviet (en)            | Jeĺsk (wd:Q955726)             | Jeĺsk (en)             | 1974-08-15T00:00:00Z (xsd:dateTime) |
| Ivory Coast (wd:Q1008)                     | Ivory Coast (en)                  | Abidjan (wd:Q1515)             | Abidjan (en)           | 1983-03-01T00:00:00Z (xsd:dateTime) |
| ...                                        | ...                               | ...                            | ...                    | ...                                 |
| Chalmianski Sieĺsaviet (wd:Q102200465)     | Chalmianski Sieĺsaviet (en)       | Siamionavičy (wd:Q4415887)     | Siamionavičy (en)      | 1954-07-16T00:00:00Z (xsd:dateTime) |
| Akmenė District Municipality (wd:Q1023041) | Akmenė District Municipality (en) | Akmenė (wd:Q1023044)           | Akmenė (en)            | 1962-01-31T00:00:00Z (xsd:dateTime) |
| Akmenė District Municipality (wd:Q1023041) | Akmenė District Municipality (en) | Naujoji Akmenė (wd:Q835848)    | Naujoji Akmenė (en)    | 1962-12-08T00:00:00Z (xsd:dateTime) |
| Martynavicki Sieĺsaviet (wd:Q102515567)    | Martynavicki Sieĺsaviet (en)      | Martynavičy (wd:Q21590761)     | Martynavičy (en)       | 1939-01-01T00:00:00Z (xsd:dateTime) |
| Martynavicki Sieĺsaviet (wd:Q102515567)    | Martynavicki Sieĺsaviet (en)      | Kazansk (wd:Q4207694)          | Kazansk (en)           | 1954-07-16T00:00:00Z (xsd:dateTime) |

[Assistant] I'll check how some well-known countries are classified (P31) to ensure using the correct class (sovereign state wd:Q3624078 vs country wd:Q6256). I'll query P31 for a few example countries.

[Tool]
Got 4,953 rows and 3 columns, showing the first 10 rows below:
| subject                | property                       | object                                       |
| ---------------------- | ------------------------------ | -------------------------------------------- |
| United States (wd:Q30) | instance of (wdt:P31)          | superpower (wd:Q1489259)                     |
| United States (wd:Q30) | country (wdt:P17)              | United States (wd:Q30)                       |
| United States (wd:Q30) | coordinate location (wdt:P625) | POINT(-98.579500 39.828175) (geo:wktLiteral) |
| United States (wd:Q30) | Commons category (wdt:P373)    | United States                                |
| United States (wd:Q30) | part of (wdt:P361)             | North America (wd:Q49)                       |
| United States (wd:Q30) | Freebase ID (wdt:P646)         | /m/09c7w0                                    |
| United States (wd:Q30) | GeoNames ID (wdtn:P1566)       | <https://sws.geonames.org/6252001/>          |
| United States (wd:Q30) | population (wdt:P1082)         | 340110988 (xsd:decimal)                      |
| United States (wd:Q30) | inception (wdt:P571)           | 1784-05-12T00:00:00Z (xsd:dateTime)          |
| United States (wd:Q30) | VIAF cluster ID (wdtn:P214)    | <http://viaf.org/viaf/130168302>             |
| ...                    | ...                            | ...                                          |

[Assistant] I'll check the instance of (P31) values for a few well-known countries (France, Germany, Japan) to see whether they are instance of sovereign state (Q3624078) or country (Q6256). I'll run property listing for those entities.

[Tool]
Got 3,561 rows and 3 columns, showing the first 10 rows below:
| subject          | property                       | object                                                                                |
| ---------------- | ------------------------------ | -------------------------------------------------------------------------------------------------------------------------- |
| France (wd:Q142) | instance of (wdt:P31)          | sovereign state (wd:Q3624078)                                                                                |
| France (wd:Q142) | country (wdt:P17)              | France (wd:Q142)                                                                                |
| France (wd:Q142) | coordinate location (wdt:P625) | POINT(2.000000 47.000000) (geo:wktLiteral)                                                                                |
| France (wd:Q142) | Commons category (wdt:P373)    | France                                                                                |
| France (wd:Q142) | image (wdt:P18)                | <http://commons.wikimedia.org/wiki/Special:FilePath/Paris%20from%20the%20Arc%20de%20Triomphe%2C%2017%20October%202019.jpg> |
| France (wd:Q142) | part of (wdt:P361)             | Pyrenees–Mediterranean Euroregion (wd:Q1849394)                                                                            |
| France (wd:Q142) | Freebase ID (wdt:P646)         | /m/0f8l9c                                                                                |
| France (wd:Q142) | GeoNames ID (wdtn:P1566)       | <https://sws.geonames.org/3017382/>                                                                                |
| France (wd:Q142) | population (wdt:P1082)         | 68373433 (xsd:decimal)                                                                                |
| France (wd:Q142) | inception (wdt:P571)           | 0843-08-01T00:00:00Z (xsd:dateTime)                                                                                |
| ...              | ...                            | ...                                                                                |

[Assistant]
France is instance of sovereign state (wd:Q3624078). Good. I'll now construct the SPARQL query to get all items that are instance of sovereign state (wd:Q3624078), get their capital via p:P36/ps:P36 ?capital, and exclude those capital statements that have an end time qualifier (pq:P582). Also ensure we return labels for both country and capital in English and order by country label. Need to return IRIs of country and capital. Use OPTIONAL for labels. Also ensure to exclude cases where there exists any capital statement for that country that has pq:P582 — Hmm need careful logic: The user says "excluding those where the capital has an end date". This likely means exclude capital statements that have an end time qualifier. So if a country has multiple capital statements some with end times and some without, we should include only those capital statements without end time. But user asked "countries and their capitals for all sovereign states, excluding those where the capital has an end date" — ambiguous whether to exclude entire country if any capital statement has end date, or exclude capital entries that have end date. I will interpret as: for each sovereign state, include capital statements that do not have an end time qualifier. If a country has no current capital (all capital statements have end times), then it will be excluded since there is no capital without end time.

SPARQL pattern: ?country wdt:P31 wd:Q3624078 . Use p:P36 ?capStmt . ?capStmt ps:P36 ?capital . FILTER NOT EXISTS { ?capStmt pq:P582 ?endTime }.

Also include rdfs:label optional for both in English. Order by ?countryLabel.

Also must return IRIs: ?country and ?capital should be in results. Add OPTIONAL { ?country rdfs:label ?countryLabel . FILTER(LANG(?countryLabel) = "en") } Similarly for capital. But the rule said labels optional and should be in optional clauses. Yes.

Finally, must execute final query before answering. Also must explain thought process before and after each step and function call. So we should provide reasoning then call execute via functions.execute. We already did some intermediate queries; we need to explain those steps and show that we've built the final query. Then run it.

I'll craft the final SPARQL.

One more thought: using wdt:P36 would miss qualifiers; we need to use p:P36 to get statement, then ps:P36 to the capital. Using wdt:P31 wd:Q3624078 ensures instance of sovereign state. Some countries might have P31 as country (Q6256) instead, but earlier we saw France uses sovereign state. Many countries are instance of sovereign state. We can also include subclass of sovereign state? But user asked sovereign states, likely those with instance of sovereign state. Good.

Also ensure DISTINCT to avoid duplicates. Use ORDER BY ?countryLabel.

Construct query:

SELECT DISTINCT ?country ?countryLabel ?capital ?capitalLabel WHERE {
  ?country wdt:P31 wd:Q3624078 .
  ?country p:P36 ?capStmt .
  ?capStmt ps:P36 ?capital .
  FILTER NOT EXISTS { ?capStmt pq:P582 ?endTime . }
  OPTIONAL { ?country rdfs:label ?countryLabel . FILTER(LANG(?countryLabel) = "en") }
  OPTIONAL { ?capital rdfs:label ?capitalLabel . FILTER(LANG(?capitalLabel) = "en") }
}
ORDER BY ?countryLabel

Yes.

Now call functions.execute with that query.

Then provide final answer with summary and maybe say number of rows or mention first few? The instructions require use functions.answer to finalize answer: producing both final SPARQL query and answer string. The functions API expects we call functions.answer (not execute?) But we must execute final SPARQL query before giving answer. So we will execute via functions.execute, then use functions.answer to finalize. The developer tool types: functions.execute and functions.answer. So we need to call execute (we will) then analyze results and call answer with final SPARQL and answer: a textual summary of what query returns. The answer string should be based on query results. It might be long to list all countries; but probably better to state we are returning the query and say "the query returns N rows" and maybe provide no list. But the user asked "What are the countries and their capitals... Please include the labels and order by country label." They likely expect the SPARQL query as output. The instruction at top: "Your job is to generate a SPARQL query to answer a given user question." So final output should include the SPARQL query. The functions.answer requires answer string based on query results. So we should include something like "Query executed successfully; it returns X country-capital pairs. Here is the SPARQL query:" But must include the query in the answer field too. The functions.answer call includes the sparql string and answer string. So we'll do that.

Now execute.

I'll execute the SPARQL query that finds all items that are instance of sovereign state (wd:Q3624078), retrieves their capital statements (ps:P36) that do not have an end time qualifier (pq:P582), and returns labels in English. Then I'll report how many results were returned. I'll run the query now.

[Tool]
Got 209 rows and 4 columns, showing the first 5 and last 5 rows below:
| country               | countryLabel     | capital                     | capitalLabel          |
| --------------------- | ---------------- | --------------------------- | --------------------- |
| Afghanistan (wd:Q889) | Afghanistan (en) | Kabul (wd:Q5838)            | Kabul (en)            |
| Albania (wd:Q222)     | Albania (en)     | Tirana (wd:Q19689)          | Tirana (en)           |
| Algeria (wd:Q262)     | Algeria (en)     | Algiers (wd:Q3561)          | Algiers (en)          |
| Andorra (wd:Q228)     | Andorra (en)     | Andorra la Vella (wd:Q1863) | Andorra la Vella (en) |
| Angola (wd:Q916)      | Angola (en)      | Luanda (wd:Q3897)           | Luanda (en)           |
| ...                   | ...              | ...                         | ...                   |
| Vietnam (wd:Q881)     | Vietnam (en)     | Hanoi (wd:Q1858)            | Hanoi (en)            |
| Yemen (wd:Q805)       | Yemen (en)       | Aden (wd:Q131694)           | Aden (en)             |
| Yemen (wd:Q805)       | Yemen (en)       | Sanaa (wd:Q2471)            | Sanaa (en)            |
| Zambia (wd:Q953)      | Zambia (en)      | Lusaka (wd:Q3881)           | Lusaka (en)           |
| Zimbabwe (wd:Q954)    | Zimbabwe (en)    | Harare (wd:Q3921)           | Harare (en)           |

[Assistant] I'll provide the final SPARQL query (the one I executed) and summarize the results: it returns 209 country–capital pairs for items that are instance of sovereign state and whose capital statement does not have an end time qualifier. Now I will finalize with the query and the result summary.

[Tool] Stopping