PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?item ?itemLabel ?type ?typeLabel ( YEAR( ?inception ) AS ?inceptionYear ) ( YEAR( ?opening ) AS ?openingYear ) ?height ?length ?island ?islandLabel WHERE {
  ?item wdt:P31 wd:Q44377 .
  ?item wdt:P17 wd:Q4628 .
  OPTIONAL {
    ?item wdt:P31 ?type .
  }
  OPTIONAL {
    ?item wdt:P279 ?type .
  }
  OPTIONAL {
    ?item wdt:P571 ?inception .
  }
  OPTIONAL {
    ?item wdt:P1619 ?opening .
  }
  OPTIONAL {
    ?item wdt:P2048 ?height .
  }
  OPTIONAL {
    ?item wdt:P2043 ?length .
  }
  OPTIONAL {
    {
      ?item wdt:P706 ?island .
      ?island wdt:P31 / wdt:P279 * wd:Q23442 .
    } UNION {
      ?item wdt:P131 ?island .
      ?island wdt:P31 / wdt:P279 * wd:Q23442 .
    } UNION {
      ?item wdt:P276 ?island .
      ?island wdt:P31 / wdt:P279 * wd:Q23442 .
    }
  }
  OPTIONAL {
    ?item rdfs:label ?itemLabel FILTER ( LANG( ?itemLabel ) = "en" )
  }
  OPTIONAL {
    ?type rdfs:label ?typeLabel FILTER ( LANG( ?typeLabel ) = "en" )
  }
  OPTIONAL {
    ?island rdfs:label ?islandLabel FILTER ( LANG( ?islandLabel ) = "en" )
  }
}
ORDER BY ?item
LIMIT 100

Using entities:
island (wd:Q23442), also known as islands, isle
tunnel (wd:Q44377)
Faroe Islands (wd:Q4628), also known as 🇫🇴, Atlantic/Faroe, Færeyjar, Faeroe Is, Faeroe Islands, etc.

Using properties:
located in the administrative territorial entity (wd:P131 as wdt), also known as administrative territorial entity, administrative territory, city, happens in, in, etc.
date of official opening (wd:P1619 as wdt), also known as date of opening, date opened, grand opening, inaugurated, inauguration, etc.
country (wd:P17 as wdt), also known as host country, land, sovereign state, state, P17
length (wd:P2043 as wdt), also known as dimension, distance, length overall, LOA, long, etc.
height (wd:P2048 as wdt), also known as depth over terrain, heighth, size, P2048
location (wd:P276 as wdt), also known as based in, city, from, held by, in, etc.
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.
inception (wd:P571 as wdt), also known as broke ground, built, commenced on date, commencement date, completed, etc.
located in/on physical feature (wd:P706 as wdt), also known as geographical region, is in, is on, landform, located on island, etc.

Got 9 rows and 10 columns:
| item                               | itemLabel                | type               | typeLabel   | inceptionYear  | openingYear    | height            | length             | island                | islandLabel   |
| ---------------------------------- | ------------------------ | ------------------ | ----------- | -------------- | -------------- | ----------------- | ------------------ | --------------------- | ------------- |
| Norðskálatunnilin (wd:Q11170632)   | Norðskálatunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1976 (xsd:int) | 1976 (xsd:int) | 4.5 (xsd:decimal) | 2520 (xsd:decimal) | Eysturoy (wd:Q200939) | Eysturoy (en) |
| Sumbiartunnilin (wd:Q19391107)     | Sumbiartunnilin (en)     | tunnel (wd:Q44377) | tunnel (en) | 1997 (xsd:int) | 1997 (xsd:int) | 4.6 (xsd:decimal) | 3240 (xsd:decimal) | Suðuroy (wd:Q210309)  | Suðuroy (en)  |
| Kunoyartunnilin (wd:Q21793971)     | Kunoyartunnilin (en)     | tunnel (wd:Q44377) | tunnel (en) | 1988 (xsd:int) |                | 4.6 (xsd:decimal) | 3031 (xsd:decimal) | Kunoy (wd:Q212033)    | Kunoy (en)    |
| Hvannasundstunnilin (wd:Q21793973) | Hvannasundstunnilin (en) | tunnel (wd:Q44377) | tunnel (en) | 1967 (xsd:int) |                | 3.1 (xsd:decimal) | 2120 (xsd:decimal) | Borðoy (wd:Q202170)   | Borðoy (en)   |
| Leirvíkartunnilin (wd:Q21814470)   | Leirvíkartunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1985 (xsd:int) |                | 4.6 (xsd:decimal) | 2238 (xsd:decimal) | Eysturoy (wd:Q200939) | Eysturoy (en) |
| Leynartunnilin (wd:Q21814474)      | Leynartunnilin (en)      | tunnel (wd:Q44377) | tunnel (en) | 1977 (xsd:int) |                | 4.5 (xsd:decimal) | 760 (xsd:decimal)  | Streymoy (wd:Q192540) | Streymoy (en) |
| Sandvíkartunnilin (wd:Q21814482)   | Sandvíkartunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1969 (xsd:int) |                | 3.2 (xsd:decimal) | 1500 (xsd:decimal) | Suðuroy (wd:Q210309)  | Suðuroy (en)  |
| Árnafjarðartunnilin (wd:Q21814506) | Árnafjarðartunnilin (en) | tunnel (wd:Q44377) | tunnel (en) | 1965 (xsd:int) |                | 3.1 (xsd:decimal) | 1680 (xsd:decimal) | Borðoy (wd:Q202170)   | Borðoy (en)   |
| wd:Q56199617                       |                          | tunnel (wd:Q44377) | tunnel (en) | 1985 (xsd:int) |                | 3.5 (xsd:decimal) | 220 (xsd:decimal)  | Kalsoy (wd:Q212043)   | Kalsoy (en)   |

Answer:
I searched for Wikidata items that are instances of the class 'tunnel' (wd:Q44377) and are in the Faroe Islands (country wd:Q4628). I retrieved for each tunnel: its instance/subclass types (P31/P279), inception year (P571) and date of official opening (P1619) as years, height (P2048), length (P2043), and associated islands via P706/P131/P276 (filtered to items that are instances of 'island' wd:Q23442). The final SPARQL query was executed and returned the following tunnels and properties:

Results (one row per tunnel item):
- wd:Q11170632 — Norðskálatunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1976
  - opening year: 1976
  - height: 4.5
  - length: 2520
  - island: wd:Q200939 (Eysturoy)

- wd:Q19391107 — Sumbiartunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1997
  - opening year: 1997
  - height: 4.6
  - length: 3240
  - island: wd:Q210309 (Suðuroy)

- wd:Q21793971 — Kunoyartunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1988
  - height: 4.6
  - length: 3031
  - island: wd:Q212033 (Kunoy)

- wd:Q21793973 — Hvannasundstunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1967
  - height: 3.1
  - length: 2120
  - island: wd:Q202170 (Borðoy)

- wd:Q21814470 — Leirvíkartunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1985
  - height: 4.6
  - length: 2238
  - island: wd:Q200939 (Eysturoy)

- wd:Q21814474 — Leynartunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1977
  - height: 4.5
  - length: 760
  - island: wd:Q192540 (Streymoy)

- wd:Q21814482 — Sandvíkartunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1969
  - height: 3.2
  - length: 1500
  - island: wd:Q210309 (Suðuroy)

- wd:Q21814506 — Árnafjarðartunnilin
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1965
  - height: 3.1
  - length: 1680
  - island: wd:Q202170 (Borðoy)

- wd:Q56199617 — (no English label in Wikidata)
  - instance/subclass: wdt:P31 = wd:Q44377 (tunnel)
  - inception year: 1985
  - height: 3.5
  - length: 220
  - island: wd:Q212043 (Kalsoy)

Notes:
- For types I returned P31 and P279 where available; in practice all found tunnels are instances of wd:Q44377 (tunnel). Those type IRIs are present in the SPARQL results.
- Inception and opening years were extracted using YEAR() in SPARQL; where both P571 and P1619 were present the opening year is shown; otherwise only inception year is shown (some items had both and some only inception).
- Heights and lengths are given with their numeric values as stored on Wikidata (units are meters unless otherwise specified on Wikidata).
- Islands are linked when the tunnel item has P706/P131/P276 pointing to an item that is an instance/subclass of 'island' (wd:Q23442). Some tunnels are associated with larger islands (e.g., Eysturoy, Suðuroy) rather than a settlement.

If you want, I can:
- Expand the query to include tunnels that are subclasses of tunnel (P279) rather than instances.
- Include more precise opening/start dates (full ISO dates) rather than years.
- Return all Wikidata statements for each tunnel for further properties (e.g., coordinates, images, operator).

What are the tunnels in the Faroe Islands? For each tunnel, include also: what it is an instance or subclass of; the year it started, its year of inception, or its year of official opening (if available); its height (if available), its length (if available), and the islands it is associated with (if available)?

[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 tunnels in the Faroe Islands? For each tunnel, include also: what it is an instance or subclass of; the year it started, its year of inception, or its year of official opening (if available); its height (if available), its length (if available), and the islands it is associated with (if available)?

[Assistant] Step 1: I'll search for relevant entities with "tunnel" and for the Faroe Islands. I'll start by searching for the general concept "tunnel" in Wikidata to find the class item identifier.

[Tool]
Top 10 entity alternatives:
1. tunnel (wd:Q44377): is subclass of underground structure / is instance of geographical feature / is instance of geographical object / is subclass of mine opening / is subclass of thoroughfare / underground passageway / underground passageway
2. The Tunnel (wd:Q24113685, matched via Tunnel), also known as Tunnel: 2016 film directed by Kim Seong-hun / is instance of film
3. The Tunnel (wd:Q29327, matched via Tunnel), also known as Der Tunnel, Tunnel: 2011 German television film directed by Roland Suso Richter / is instance of film
4. Tunnel (wd:Q28700201): 2017 South Korean television series / is instance of television series / is instance of serial
5. nutmeg (wd:Q4350189, matched via tunnel), also known as meg, tunnel: is instance of association football terminology / football and field hockey technique / is subclass of football dribbling
6. The Tunnel (wd:Q15134928, matched via Tunnel), also known as Der Tunnel, Tunnel: 1915 silent film directed by William Wauer / is instance of film
7. The Tunnel (wd:Q17425044, matched via Tunnel), also known as Tunnel: 2014 film directed by Park Gyu-taek / is instance of film
8. The Tunnel (wd:Q1197631, matched via Tunnel), also known as Der Tunnel, Tunnel: 1933 film by Curtis Bernhardt in German / is instance of film
9. roadway (wd:Q1486179, matched via tunnel), also known as road, tunnel: tunnel in mine workings with regular, fairly uniform cross-section / is subclass of underground structure / is subclass of mine opening
10. The Tunnel (wd:Q18210057, matched via Tunnel), also known as Le Tunnel, Tunnel: is instance of film / 1933 French film

[Assistant] Now I'll search for entities related to tunnels in the Faroe Islands (searching for "Faroe Islands tunnel", "Faroe Islands tunnel tunnel", and Faroese names like "underground" maybe). I'll start with "Faroe Islands tunnel".

[Tool]
Top 10 entity alternatives:
1. Faroe Islands (wd:Q4628), also known as 🇫🇴, Atlantic/Faroe, Færeyjar, Faeroe Is, Faeroe Islands, etc.: North Atlantic archipelago organized as an autonomous constituent country of the Kingdom of Denmark / North Atlantic archipelago organized as an autonomous constituent country of the Kingdom of Denmark / is instance of autonomous country within the Kingdom of Denmark / A European island group and archipelago / is instance of electoral unit / island group and archipelago / is instance of constituency / is instance of riding
2. flag of the Faroe Islands (wd:Q4575, matched via Faroe Islands flag), also known as Faroe Islands flag, Faroese flag, flag of Faroe Islands, Merkið, the Faroe Islands flag: national flag of the Faroe Islands / is instance of national flag
3. Faroese (wd:Q223179, matched via Faroe Islands residents), also known as Faeroes, Faeroese, Faroe Islanders, Faroe Islands residents, Faroese people: people from or residents of the Faroe Islands / is instance of human population / is instance of Population / is instance of population / is subclass of inhabitant / is subclass of nation / is subclass of Danes
4. Faroe Islands Cup (wd:Q899180): men's national association football tournament in the Faroe Islands / is instance of national association football cup
5. Hov (wd:Q1025136, matched via Hov, Faroe Islands), also known as Hov, Faroe Islands: settlement on Suduroy, Faroe Islands / is instance of human settlement / village in the Faroe Islands / village in the Faroe Islands
6. geography of the Faroe Islands (wd:Q671799, matched via Faroe Islands geography), also known as atlas of the Faroe Islands, Faroe Islands geography, the Faroe Islands geography: is instance of geography of geographic location / is subclass of geography of Europe
7. history of the Faroe Islands (wd:Q254346, matched via Faroe Islands history), also known as Faroe Islands history, the Faroe Islands history: is instance of history of a country or state / is subclass of history of Europe / aspect of history
8. Víkar, Faroe Islands (wd:Q1001141), also known as Vikar: is instance of abandoned village / abandoned village
9. football in the Faroe Islands (wd:Q947079, matched via Faroe Islands football), also known as association football in the Faroe Islands, Faroe Islands football, Faroese association football, Faroese football, Faroese soccer, etc.: overview of association football practiced in the Faroe Islands / is instance of sport in a geographic region / is instance of sports competition / is instance of league system
10. elections in the Faroe Islands (wd:Q3467519, matched via Faroe Islands elections), also known as elections of the Faroe Islands, Faroe Islands elections: is instance of aspect in a geographic region / is subclass of public election / is subclass of election / is subclass of Election

[Tool]
Top 10 entity alternatives:
1. Faroe Islands (wd:Q4628), also known as 🇫🇴, Atlantic/Faroe, Færeyjar, Faeroe Is, Faeroe Islands, etc.: North Atlantic archipelago organized as an autonomous constituent country of the Kingdom of Denmark / North Atlantic archipelago organized as an autonomous constituent country of the Kingdom of Denmark / is instance of autonomous country within the Kingdom of Denmark / A European island group and archipelago / is instance of electoral unit / island group and archipelago / is instance of constituency / is instance of riding
2. flag of the Faroe Islands (wd:Q4575, matched via Faroe Islands flag), also known as Faroe Islands flag, Faroese flag, flag of Faroe Islands, Merkið, the Faroe Islands flag: national flag of the Faroe Islands / is instance of national flag
3. Faroese (wd:Q223179, matched via Faroe Islands residents), also known as Faeroes, Faeroese, Faroe Islanders, Faroe Islands residents, Faroese people: people from or residents of the Faroe Islands / is instance of human population / is instance of Population / is instance of population / is subclass of inhabitant / is subclass of nation / is subclass of Danes
4. Faroe Islands Premier League (wd:Q739479): is instance of association football league / is subclass of national championship / association football league
5. Faroe Islands Football Association (wd:Q268628): association football governing body in the Faroe Islands / is instance of association football federation / is instance of football association
6. Faroe Islands Cup (wd:Q899180): men's national association football tournament in the Faroe Islands / is instance of national association football cup
7. Faroe Islands Super Cup (wd:Q643660): is instance of national association football supercup / super cup
8. Hov (wd:Q1025136, matched via Hov, Faroe Islands), also known as Hov, Faroe Islands: settlement on Suduroy, Faroe Islands / is instance of human settlement / village in the Faroe Islands / village in the Faroe Islands
9. geography of the Faroe Islands (wd:Q671799, matched via Faroe Islands geography), also known as atlas of the Faroe Islands, Faroe Islands geography, the Faroe Islands geography: is instance of geography of geographic location / is subclass of geography of Europe
10. history of the Faroe Islands (wd:Q254346, matched via Faroe Islands history), also known as Faroe Islands history, the Faroe Islands history: is instance of history of a country or state / is subclass of history of Europe / aspect of history

[Assistant] I'll search for Wikidata items that are instances of tunnel and are located in the Faroe Islands by querying the endpoint for items with wdt:P31 (instance of) tunnel and wdt:P17 (country) Faroe Islands, or located in Faroe Islands. I'll execute a SPARQL query to find such tunnels. I will first try a simple query to find items that are instance of tunnel (wd:Q44377) and have country Faroe Islands (wd:Q4628) or are located in the Faroe Islands.

[Tool]
Got 9 rows and 2 columns:
| item                               | itemLabel                |
| ---------------------------------- | ------------------------ |
| Norðskálatunnilin (wd:Q11170632)   | Norðskálatunnilin (en)   |
| Sumbiartunnilin (wd:Q19391107)     | Sumbiartunnilin (en)     |
| Kunoyartunnilin (wd:Q21793971)     | Kunoyartunnilin (en)     |
| Hvannasundstunnilin (wd:Q21793973) | Hvannasundstunnilin (en) |
| Leirvíkartunnilin (wd:Q21814470)   | Leirvíkartunnilin (en)   |
| Leynartunnilin (wd:Q21814474)      | Leynartunnilin (en)      |
| Sandvíkartunnilin (wd:Q21814482)   | Sandvíkartunnilin (en)   |
| Árnafjarðartunnilin (wd:Q21814506) | Árnafjarðartunnilin (en) |
| wd:Q56199617                       |                          |

[Assistant] I'll search for properties related to 'inception', 'start', 'opening', 'height', 'length', and 'island' to find the correct Wikidata property IDs. I'll start with 'inception'.

[Tool]
Top 10 property alternatives:
1. inception (wd:P571 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via inception date), also known as broke ground, built, commenced on date, commencement date, completed, etc.: time when an entity begins to exist; for date of official opening use P1619 / time when an entity begins to exist; for date of official opening use P1619 / date or point in time when the organisation / object was founded / created / is subproperty of start time
2. production date (wd:P2754 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via filming date), also known as date of production, filming date, filming time, year of production, P2754: period of active production of (creative) work; the only date ... date (P577); in general cases, use inception (P571)
3. date of official opening (wd:P1619 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via date of opening), also known as date of opening, date opened, grand opening, inaugurated, inauguration, etc.: date or point in time a place, organization, or event officially opened / date or point in time an event, museum, theatre etc. officially opened / is subproperty of date of foundation or creation / is subproperty of start time / is subproperty of inception
4. effective date (wd:P7588 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via date of commencement), also known as date of coming into force, date of commencement, enforcement date, P7588: date on which a statutory or administrative law or other ... may also be retrospective, predating the date of enactment. / date on which a statutory or administrative law comes into ... may also be retrospective, predating the date of enactment. / is subproperty of point in time
5. date of first performance (wd:P1191 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via premiere date), also known as date of premiere, first performance date, premiere, premiere date, time of first performance, etc.: date a work was first debuted, performed or live-broadcasted / is subproperty of date of publication / is subproperty of publication date
6. time of discovery or invention (wd:P575 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via time of invention), also known as date discovered, date of discovery, date of invention, discovered, discovered on, etc.: date or point in time when the item was discovered or invented / when the item was discovered
7. UTC date of spacecraft launch (wd:P619 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via launch date), also known as date of spacecraft launch, launch date, launch time, spacecraft launch date, spacecraft launch time, etc.: date of spacecraft launch in UTC
8. service entry (wd:P729 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via launch date), 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
9. publication date (wd:P577 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via launch date), also known as air date, airdate, be published during, be published in, broadcast date, etc.: date or point in time when a work was first published or released / date or point in time a work is first published or released / date or point in time a work is first published or released / is subproperty of point in time
10. date depicted (wd:P2913 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv), also known as date shown, depicted date, depicted time, depicts date, shown as at date, etc.: date represented in a work (for narrative works use P2408) / date represented in a work

[Assistant] Properties found: inception (P571), date of official opening (P1619). Next search for length and height properties.

[Tool]
Top 10 property alternatives:
1. duration (wd:P2047 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via length), 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
2. length (wd:P2043 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv), also known as dimension, distance, length overall, LOA, long, etc.: measured dimension of an object / measured dimension of an object
3. number of episodes (wd:P1113 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via series length), also known as episode count, episodes, no. of episodes, series length, P1113: is subproperty of number of parts of a work of art / is subproperty of number of parts of this work / number of episodes in a film/TV/radio series / number of episodes in a film/TV/radio series / number of episodes in a film/TV/radio series
4. longest span (wd:P2787 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via span length (longest)), also known as length of longest span, length of main span, longest span length, main span, main span length, etc.: length of the longest span of a bridge, a natural arch / length of the longest span of a bridge
5. area (wd:P2046 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via size), also known as acreage, camera resolution, die area, die size, image resolution, etc.: area occupied by an object / area occupied by an object
6. width (wd:P2049 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via size), also known as breadth, bus width, size, P2049: is subproperty of length / width of an object / width of an object
7. height (wd:P2048 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via size), also known as depth over terrain, heighth, size, P2048: vertical dimension of an entity / vertical length of an entity / is subproperty of length
8. term length of position (wd:P2097 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via length of term), also known as length of term, position term, term length, term of position, time in position, etc.: length of time in years (unit: Q577) a person (usually a politician) is to serve in a particular position. Do not add bounds. / is subproperty of duration
9. measured physical quantity (wd:P111 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via measure of), also known as measure of, measures, physical quantity, quantity, P111: value of a physical property expressed as number multiplied by a unit / physical property measured by an unit / physical property measured by an unit
10. number of losses (wd:P1356 as prn/p/pr/wdt/ps/pqv/psv/pq/psn/pqn/wdtn/prv, matched via L), also known as defeats, games lost, L, losses, lost, etc.: number of sporting matches, games or events lost

[Assistant]
We have length P2043 and height P2048. Next, find property for 'island' or 'is located on island' — likely 'located on terrain feature' (P706) or 'located in the administrative territorial entity' (P131) or 'island' association via 'located in archipelago' or 'located in' Some tunnel items might have 'connects' or 'connects to' properties. I'll search for relevant properties like 'located on island' or 'island' entity. Also need 'instance of' or 'subclass of' is part of the returned results via P31 and P279. The user asked: "What are the tunnels in the Faroe Islands? For each tunnel, include also: what it is an instance or subclass of; the year it started, its year of inception, or its year of official opening (if available); its height (if available), its length (if available), and the islands it is associated with (if available)?"

So we need list of tunnels in Faroe Islands. The earlier query returned 9 items (including an unlabeled Q56199617). There may be others where P31 is subclass of tunnel (P279) or 'subterranean tunnel' etc. We should expand to items that are subclass of tunnel or instance of tunnel and located in Faroe Islands via P17 or P276 location or P131. Let's query items that (wdt:P31/wdt:P279*) wd:Q44377 (i.e., instance of or subclass of tunnel) and with country wdt:P17 wd:Q4628 OR located in administrative territorial entity P131 somewhere in Faroe Islands items. Better: items that are instance of tunnel or subclass of tunnel and are located in Faroe Islands via P17 OR located in 'island' within Faroe Islands.

I'll craft SPARQL selecting items where ?item wdt:P31/wdt:P279* wd:Q44377 and (wdt:P17 wd:Q4628 OR wdt:P131/wdt:P17 wd:Q4628 OR wdt:P276 ?loc with ?loc wdt:P17 wd:Q4628). But wdt doesn't allow path from object to have property? But we can use property path: ?item wdt:P31/wdt:P279* wd:Q44377. For location: (?item wdt:P17 wd:Q4628) or (?item wdt:P131 ?admin . ?admin wdt:P17 wd:Q4628) or (?item wdt:P276 ?place . ?place wdt:P17 wd:Q4628). Could be messy. Alternatively search for items with P31 tunnel and either P17 Faroe Islands or P131 some with P17. Let's try a query to include more items by using OPTIONAL patterns.

Also need to include for each item: P31 and its value (instance of) and P279 subclass? The property 'subclass of' applies to classes; tunnels probably are instances of tunnel so P31 will yield value wd:Q44377. But the user asked "what it is an instance or subclass of" — so for each tunnel item we should include both P31 and P279 maybe. We'll include both P31 and P279*? For the item, retrieve ?type where either ?item wdt:P31 ?type OR ?item wdt:P279 ?type. But P279 is used for classes, not instances; but some tunnel items might be subclasses? But safe to include both.

Also include inception P571, date of official opening P1619, start time maybe 'start time' P580? There's 'inception' (P571) covers 'started, built' and P1619 date of official opening. We'll include both. For 'height' P2048 and 'length' P2043. For islands associated with tunnel: maybe property 'connects' or 'located on' P706 'located on terrain feature' or 'connecting' properties: 'connects to' P31 no. But a practical approach: find any island items linked to the tunnel via 'island' or 'on island' or 'located on terrain feature' P706 or 'located in the administrative territorial entity' P131 where the admin is an island. Let's include ?island variable using patterns: ?item wdt:P706 ?island OR ?item wdt:P131 ?island OR ?item wdt:P276 ?island OR ?item wdt:P17 ?country with a join ?island wdt:P31 wd:Q23442 (island). But P706 may point to terrain feature. Also island entity class: wd:Q23442. So we can look for any ?island such that (?item wdt:P706|wdt:P131|wdt:P276) ?island . ?island wdt:P31/wdt:P279* wd:Q23442. That should capture islands.

Let's build query: select ?item with label, ?type with label, ?inception, ?opening, ?height, ?length, ?island and island label. Use OPTIONAL for those. Also restrict items to those where ?item is instance of or subclass of tunnel and located in Faroe Islands via country P17 wd:Q4628 OR has any of P131 or P276 or P706 linking to an island with country P17 wd:Q4628. But simpler: include items where either P17 Faroe Islands OR any of the location properties point to an entity that has country Faroe Islands. Let's implement a FILTER EXISTS with patterns:

VALUES ?country { wd:Q4628 }
?item wdt:P31/wdt:P279* wd:Q44377 .
FILTER (
  EXISTS { ?item wdt:P17 ?country } ||
  EXISTS { ?item wdt:P131 ?admin . ?admin wdt:P17 ?country } ||
  EXISTS { ?item wdt:P276 ?place . ?place wdt:P17 ?country } ||
  EXISTS { ?item wdt:P706 ?place2 . ?place2 wdt:P17 ?country }
)

But SPARQL allows EXISTS in FILTER. Better to use UNION to combine patterns: We'll write:

{
 ?item wdt:P31/wdt:P279* wd:Q44377 .
 ?item wdt:P17 wd:Q4628 .
} UNION {
 ?item wdt:P31/wdt:P279* wd:Q44377 .
 ?item wdt:P131 ?admin .
 ?admin wdt:P17 wd:Q4628 .
} UNION {
 ?item wdt:P31/wdt:P279* wd:Q44377 .
 ?item wdt:P276 ?place .
 ?place wdt:P17 wd:Q4628 .
} UNION {
 ?item wdt:P31/wdt:P279* wd:Q44377 .
 ?item wdt:P706 ?place2 .
 ?place2 wdt:P17 wd:Q4628 .
}

This should find items. Then retrieve properties.

Let's craft and run this query.
I'll run a SPARQL query that finds items that are instances or subclasses of 'tunnel' and are in the Faroe Islands (by country P17 or by being located in an administrative entity / place / terrain feature that has country Faroe Islands). I will retrieve instance/subclass types (P31 and P279), inception (P571), date of official opening (P1619), height (P2048), length (P2043), and associated islands (P706, P131, P276 linking to items that are islands). I will use OPTIONAL clauses and labels.

[Tool]
SPARQL execution failed:
HTTPConnectionPool(host='localhost', port=7001): Read timed out. (read timeout=30)

[Assistant] I'll run a query limited to tunnels that have country = Faroe Islands (P17=Q4628), retrieving requested properties. This is smaller and should avoid timeout.

[Tool]
SPARQL execution failed:
('Connection aborted.', ConnectionResetError(104, 'Connection reset by peer'))

[Assistant] I'll retrieve all triples for each tunnel item to find the relevant properties (instance of, subclass of, inception, opening, height, length, and associated islands). I'll start with Norðskálatunnilin (wd:Q11170632).

[Tool]
Got 53 rows and 3 columns, showing the first 10 rows below:
| subject                          | property                                                    | object                                            |
| -------------------------------- | ----------------------------------------------------------- | ------------------------------------------------- |
| Norðskálatunnilin (wd:Q11170632) | instance of (wdt:P31)                                       | tunnel (wd:Q44377)                                |
| Norðskálatunnilin (wd:Q11170632) | country (wdt:P17)                                           | Faroe Islands (wd:Q4628)                          |
| Norðskálatunnilin (wd:Q11170632) | located in the administrative territorial entity (wdt:P131) | Sunda Municipality (wd:Q768990)                   |
| Norðskálatunnilin (wd:Q11170632) | coordinate location (wdt:P625)                              | POINT(-6.956736 62.220458) (geo:wktLiteral)       |
| Norðskálatunnilin (wd:Q11170632) | Google Knowledge Graph ID (wdtn:P2671)                      | <http://g.co/kg/g/122xqk6h>                       |
| Norðskálatunnilin (wd:Q11170632) | inception (wdt:P571)                                        | 1976-01-01T00:00:00Z (xsd:dateTime)               |
| Norðskálatunnilin (wd:Q11170632) | height (wdt:P2048)                                          | 4.5 (xsd:decimal)                                 |
| Norðskálatunnilin (wd:Q11170632) | OpenStreetMap relation ID (wdtn:P402)                       | <https://www.openstreetmap.org/relation/16238390> |
| Norðskálatunnilin (wd:Q11170632) | length (wdt:P2043)                                          | 2520 (xsd:decimal)                                |
| Norðskálatunnilin (wd:Q11170632) | state of use (wdt:P5817)                                    | in use (wd:Q55654238)                             |
| ...                              | ...                                                         | ...                                               |

[Assistant] Now list triples for Sumbiartunnilin (wd:Q19391107).

[Tool]
Got 51 rows and 3 columns, showing the first 10 rows below:
| subject                        | property                                                    | object                                                                                |
| ------------------------------ | ----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| Sumbiartunnilin (wd:Q19391107) | instance of (wdt:P31)                                       | tunnel (wd:Q44377)                                                                                |
| Sumbiartunnilin (wd:Q19391107) | country (wdt:P17)                                           | Faroe Islands (wd:Q4628)                                                                                |
| Sumbiartunnilin (wd:Q19391107) | located in the administrative territorial entity (wdt:P131) | Sumba Municipality (wd:Q535561)                                                                                |
| Sumbiartunnilin (wd:Q19391107) | coordinate location (wdt:P625)                              | POINT(-6.758056 61.430278) (geo:wktLiteral)                                                                        |
| Sumbiartunnilin (wd:Q19391107) | Google Knowledge Graph ID (wdtn:P2671)                      | <http://g.co/kg/g/11b5v59fgd>                                                                                |
| Sumbiartunnilin (wd:Q19391107) | Commons category (wdt:P373)                                 | Sumbiartunnilin                                                                                |
| Sumbiartunnilin (wd:Q19391107) | image (wdt:P18)                                             | <http://commons.wikimedia.org/wiki/Special:FilePath/Sumbiartunnilin%2C%20July%202010%2C%20seen%20from%20Lopra.JPG> |
| Sumbiartunnilin (wd:Q19391107) | part of (wdt:P361)                                          | Sumba (wd:Q901784)                                                                                |
| Sumbiartunnilin (wd:Q19391107) | inception (wdt:P571)                                        | 1997-01-01T00:00:00Z (xsd:dateTime)                                                                                |
| Sumbiartunnilin (wd:Q19391107) | height (wdt:P2048)                                          | 4.6 (xsd:decimal)                                                                                |
| ...                            | ...                                                         | ...                                                                                |

[Assistant] List Kunoyartunnilin (wd:Q21793971).

[Tool]
Got 36 rows and 3 columns, showing the first 10 rows below:
| subject                        | property                                  | object                                                                                |
| ------------------------------ | ----------------------------------------- | -------------------------------------------------------------------------------------------- |
| Kunoyartunnilin (wd:Q21793971) | instance of (wdt:P31)                     | tunnel (wd:Q44377)                                                                           |
| Kunoyartunnilin (wd:Q21793971) | country (wdt:P17)                         | Faroe Islands (wd:Q4628)                                                                     |
| Kunoyartunnilin (wd:Q21793971) | coordinate location (wdt:P625)            | POINT(-6.630249 62.270097) (geo:wktLiteral)                                                  |
| Kunoyartunnilin (wd:Q21793971) | Google Knowledge Graph ID (wdtn:P2671)    | <http://g.co/kg/g/11bxdzh84m>                                                                |
| Kunoyartunnilin (wd:Q21793971) | image (wdt:P18)                           | <http://commons.wikimedia.org/wiki/Special:FilePath/Kunoy%20Tunnel%2C%20Faroe%20Islands.jpg> |
| Kunoyartunnilin (wd:Q21793971) | inception (wdt:P571)                      | 1988-01-01T00:00:00Z (xsd:dateTime)                                                          |
| Kunoyartunnilin (wd:Q21793971) | height (wdt:P2048)                        | 4.6 (xsd:decimal)                                                                            |
| Kunoyartunnilin (wd:Q21793971) | length (wdt:P2043)                        | 3031 (xsd:decimal)                                                                           |
| Kunoyartunnilin (wd:Q21793971) | state of use (wdt:P5817)                  | in use (wd:Q55654238)                                                                        |
| Kunoyartunnilin (wd:Q21793971) | located in/on physical feature (wdt:P706) | Kunoy (wd:Q212033)                                                                           |
| ...                            | ...                                       | ...                                                                                |

[Assistant] List Hvannasundstunnilin (wd:Q21793973).

[Tool]
Got 54 rows and 3 columns, showing the first 10 rows below:
| subject                            | property                                                    | object                                                                                |
| ---------------------------------- | ----------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Hvannasundstunnilin (wd:Q21793973) | instance of (wdt:P31)                                       | tunnel (wd:Q44377)                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | country (wdt:P17)                                           | Faroe Islands (wd:Q4628)                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | located in the administrative territorial entity (wdt:P131) | Klaksvík Municipality (wd:Q1094328)                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | coordinate location (wdt:P625)                              | POINT(-6.533333 62.266667) (geo:wktLiteral)                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | Google Knowledge Graph ID (wdtn:P2671)                      | <http://g.co/kg/g/11bxd_9vrn>                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | Commons category (wdt:P373)                                 | Hvannasundstunnilin                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | image (wdt:P18)                                             | <http://commons.wikimedia.org/wiki/Special:FilePath/Faroe%20Islands%2C%20Bor%C3%B0oy%2C%20Nor%C3%B0depil%20%282%29%2C%20entrance%20to%20Hvannasundstunnilin.jpg> |
| Hvannasundstunnilin (wd:Q21793973) | inception (wdt:P571)                                        | 1967-01-01T00:00:00Z (xsd:dateTime)                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | height (wdt:P2048)                                          | 3.1 (xsd:decimal)                                                                                |
| Hvannasundstunnilin (wd:Q21793973) | named after (wdt:P138)                                      | Hvannasund (wd:Q19375011)                                                                                |
| ...                                | ...                                                         | ...                                                                                |

[Assistant] List Leirvíkartunnilin (wd:Q21814470).

[Tool]
Got 35 rows and 3 columns, showing the first 10 rows below:
| subject                          | property                                  | object                                      |
| -------------------------------- | ----------------------------------------- | ------------------------------------------- |
| Leirvíkartunnilin (wd:Q21814470) | instance of (wdt:P31)                     | tunnel (wd:Q44377)                          |
| Leirvíkartunnilin (wd:Q21814470) | country (wdt:P17)                         | Faroe Islands (wd:Q4628)                    |
| Leirvíkartunnilin (wd:Q21814470) | coordinate location (wdt:P625)            | POINT(-6.737222 62.215278) (geo:wktLiteral) |
| Leirvíkartunnilin (wd:Q21814470) | Google Knowledge Graph ID (wdtn:P2671)    | <http://g.co/kg/g/11bxfgqmk9>               |
| Leirvíkartunnilin (wd:Q21814470) | inception (wdt:P571)                      | 1985-01-01T00:00:00Z (xsd:dateTime)         |
| Leirvíkartunnilin (wd:Q21814470) | height (wdt:P2048)                        | 4.6 (xsd:decimal)                           |
| Leirvíkartunnilin (wd:Q21814470) | length (wdt:P2043)                        | 2238 (xsd:decimal)                          |
| Leirvíkartunnilin (wd:Q21814470) | state of use (wdt:P5817)                  | in use (wd:Q55654238)                       |
| Leirvíkartunnilin (wd:Q21814470) | located in/on physical feature (wdt:P706) | Eysturoy (wd:Q200939)                       |
| Leirvíkartunnilin (wd:Q21814470) | wdt:P31279                                | tunnel (wd:Q44377)                          |
| ...                              | ...                                       | ...                                         |

[Assistant] List Leynartunnilin (wd:Q21814474).

[Tool]
Got 36 rows and 3 columns, showing the first 10 rows below:
| subject                       | property                                  | object                                      |
| ----------------------------- | ----------------------------------------- | ------------------------------------------- |
| Leynartunnilin (wd:Q21814474) | instance of (wdt:P31)                     | tunnel (wd:Q44377)                          |
| Leynartunnilin (wd:Q21814474) | country (wdt:P17)                         | Faroe Islands (wd:Q4628)                    |
| Leynartunnilin (wd:Q21814474) | coordinate location (wdt:P625)            | POINT(-7.019100 62.126600) (geo:wktLiteral) |
| Leynartunnilin (wd:Q21814474) | Google Knowledge Graph ID (wdtn:P2671)    | <http://g.co/kg/g/11bxff26wh>               |
| Leynartunnilin (wd:Q21814474) | inception (wdt:P571)                      | 1977-01-01T00:00:00Z (xsd:dateTime)         |
| Leynartunnilin (wd:Q21814474) | height (wdt:P2048)                        | 4.5 (xsd:decimal)                           |
| Leynartunnilin (wd:Q21814474) | length (wdt:P2043)                        | 760 (xsd:decimal)                           |
| Leynartunnilin (wd:Q21814474) | state of use (wdt:P5817)                  | in use (wd:Q55654238)                       |
| Leynartunnilin (wd:Q21814474) | located in/on physical feature (wdt:P706) | Streymoy (wd:Q192540)                       |
| Leynartunnilin (wd:Q21814474) | Structurae structure ID (wdt:P454)        | 20010983                                    |
| ...                           | ...                                       | ...                                         |

[Assistant] List Sandvíkartunnilin (wd:Q21814482).

[Tool]
Got 37 rows and 3 columns, showing the first 10 rows below:
| subject                          | property                                  | object                                      |
| -------------------------------- | ----------------------------------------- | ------------------------------------------- |
| Sandvíkartunnilin (wd:Q21814482) | instance of (wdt:P31)                     | tunnel (wd:Q44377)                          |
| Sandvíkartunnilin (wd:Q21814482) | country (wdt:P17)                         | Faroe Islands (wd:Q4628)                    |
| Sandvíkartunnilin (wd:Q21814482) | coordinate location (wdt:P625)            | POINT(-6.933056 61.618611) (geo:wktLiteral) |
| Sandvíkartunnilin (wd:Q21814482) | Google Knowledge Graph ID (wdtn:P2671)    | <http://g.co/kg/g/11bxfgx_py>               |
| Sandvíkartunnilin (wd:Q21814482) | inception (wdt:P571)                      | 1969-01-01T00:00:00Z (xsd:dateTime)         |
| Sandvíkartunnilin (wd:Q21814482) | height (wdt:P2048)                        | 3.2 (xsd:decimal)                           |
| Sandvíkartunnilin (wd:Q21814482) | length (wdt:P2043)                        | 1500 (xsd:decimal)                          |
| Sandvíkartunnilin (wd:Q21814482) | state of use (wdt:P5817)                  | in use (wd:Q55654238)                       |
| Sandvíkartunnilin (wd:Q21814482) | located in/on physical feature (wdt:P706) | Suðuroy (wd:Q210309)                        |
| Sandvíkartunnilin (wd:Q21814482) | Structurae structure ID (wdt:P454)        | 20010981                                    |
| ...                              | ...                                       | ...                                         |

[Assistant] List Árnafjarðartunnilin (wd:Q21814506).

[Tool]
Got 52 rows and 3 columns, showing the first 10 rows below:
| subject                            | property                                                    | object                                                                                |
| ---------------------------------- | ----------------------------------------------------------- | -------------------------------------------------------------------------------------- |
| Árnafjarðartunnilin (wd:Q21814506) | instance of (wdt:P31)                                       | tunnel (wd:Q44377)                                                                     |
| Árnafjarðartunnilin (wd:Q21814506) | country (wdt:P17)                                           | Faroe Islands (wd:Q4628)                                                               |
| Árnafjarðartunnilin (wd:Q21814506) | located in the administrative territorial entity (wdt:P131) | Klaksvík Municipality (wd:Q1094328)                                                    |
| Árnafjarðartunnilin (wd:Q21814506) | coordinate location (wdt:P625)                              | POINT(-6.560500 62.256400) (geo:wktLiteral)                                            |
| Árnafjarðartunnilin (wd:Q21814506) | Google Knowledge Graph ID (wdtn:P2671)                      | <http://g.co/kg/g/11bxfdtx0_>                                                          |
| Árnafjarðartunnilin (wd:Q21814506) | Commons category (wdt:P373)                                 | Árnafjarðartunnilin                                                                    |
| Árnafjarðartunnilin (wd:Q21814506) | image (wdt:P18)                                             | <http://commons.wikimedia.org/wiki/Special:FilePath/%C3%81rnafjar%C3%B0artunnilin.jpg> |
| Árnafjarðartunnilin (wd:Q21814506) | inception (wdt:P571)                                        | 1965-01-01T00:00:00Z (xsd:dateTime)                                                    |
| Árnafjarðartunnilin (wd:Q21814506) | height (wdt:P2048)                                          | 3.1 (xsd:decimal)                                                                      |
| Árnafjarðartunnilin (wd:Q21814506) | named after (wdt:P138)                                      | Árnafjørður (wd:Q252240)                                                               |
| ...                                | ...                                                         | ...                                                                                |

[Assistant] There was also one result earlier with wd:Q56199617 — list that.

[Tool]
Got 27 rows and 3 columns, showing the first 10 rows below:
| subject      | property                                  | object                                      |
| ------------ | ----------------------------------------- | ------------------------------------------- |
| wd:Q56199617 | instance of (wdt:P31)                     | tunnel (wd:Q44377)                          |
| wd:Q56199617 | country (wdt:P17)                         | Faroe Islands (wd:Q4628)                    |
| wd:Q56199617 | coordinate location (wdt:P625)            | POINT(-6.779604 62.346642) (geo:wktLiteral) |
| wd:Q56199617 | inception (wdt:P571)                      | 1985-01-01T00:00:00Z (xsd:dateTime)         |
| wd:Q56199617 | height (wdt:P2048)                        | 3.5 (xsd:decimal)                           |
| wd:Q56199617 | length (wdt:P2043)                        | 220 (xsd:decimal)                           |
| wd:Q56199617 | state of use (wdt:P5817)                  | in use (wd:Q55654238)                       |
| wd:Q56199617 | located in/on physical feature (wdt:P706) | Kalsoy (wd:Q212043)                         |
| wd:Q56199617 | wdt:P31279                                | tunnel (wd:Q44377)                          |
| wd:Q56199617 | schema:description                        | Tunnel auf den Färöer (de)                  |
| ...          | ...                                       | ...                                         |

[Assistant] I'll run a SPARQL query that finds all items that are instances of 'tunnel' (wd:Q44377) and have country Faroe Islands (wd:Q4628), returning their types (P31/P279), inception (P571), date of official opening (P1619), height (P2048), length (P2043), and any associated islands via P706/P131/P276 (filtered to items that are instances of island wd:Q23442). I'll include English labels for readability. Now I'll execute that query.

[Tool]
Got 9 rows and 10 columns:
| item                               | itemLabel                | type               | typeLabel   | inception                           | opening                             | height            | length             | island                | islandLabel   |
| ---------------------------------- | ------------------------ | ------------------ | ----------- | ----------------------------------- | ----------------------------------- | ----------------- | ------------------ | --------------------- | ------------- |
| Norðskálatunnilin (wd:Q11170632)   | Norðskálatunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1976-01-01T00:00:00Z (xsd:dateTime) | 1976-01-01T00:00:00Z (xsd:dateTime) | 4.5 (xsd:decimal) | 2520 (xsd:decimal) | Eysturoy (wd:Q200939) | Eysturoy (en) |
| Sumbiartunnilin (wd:Q19391107)     | Sumbiartunnilin (en)     | tunnel (wd:Q44377) | tunnel (en) | 1997-01-01T00:00:00Z (xsd:dateTime) | 1997-01-01T00:00:00Z (xsd:dateTime) | 4.6 (xsd:decimal) | 3240 (xsd:decimal) | Suðuroy (wd:Q210309)  | Suðuroy (en)  |
| Kunoyartunnilin (wd:Q21793971)     | Kunoyartunnilin (en)     | tunnel (wd:Q44377) | tunnel (en) | 1988-01-01T00:00:00Z (xsd:dateTime) |                                     | 4.6 (xsd:decimal) | 3031 (xsd:decimal) | Kunoy (wd:Q212033)    | Kunoy (en)    |
| Hvannasundstunnilin (wd:Q21793973) | Hvannasundstunnilin (en) | tunnel (wd:Q44377) | tunnel (en) | 1967-01-01T00:00:00Z (xsd:dateTime) |                                     | 3.1 (xsd:decimal) | 2120 (xsd:decimal) | Borðoy (wd:Q202170)   | Borðoy (en)   |
| Leirvíkartunnilin (wd:Q21814470)   | Leirvíkartunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1985-01-01T00:00:00Z (xsd:dateTime) |                                     | 4.6 (xsd:decimal) | 2238 (xsd:decimal) | Eysturoy (wd:Q200939) | Eysturoy (en) |
| Leynartunnilin (wd:Q21814474)      | Leynartunnilin (en)      | tunnel (wd:Q44377) | tunnel (en) | 1977-01-01T00:00:00Z (xsd:dateTime) |                                     | 4.5 (xsd:decimal) | 760 (xsd:decimal)  | Streymoy (wd:Q192540) | Streymoy (en) |
| Sandvíkartunnilin (wd:Q21814482)   | Sandvíkartunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1969-01-01T00:00:00Z (xsd:dateTime) |                                     | 3.2 (xsd:decimal) | 1500 (xsd:decimal) | Suðuroy (wd:Q210309)  | Suðuroy (en)  |
| Árnafjarðartunnilin (wd:Q21814506) | Árnafjarðartunnilin (en) | tunnel (wd:Q44377) | tunnel (en) | 1965-01-01T00:00:00Z (xsd:dateTime) |                                     | 3.1 (xsd:decimal) | 1680 (xsd:decimal) | Borðoy (wd:Q202170)   | Borðoy (en)   |
| wd:Q56199617                       |                          | tunnel (wd:Q44377) | tunnel (en) | 1985-01-01T00:00:00Z (xsd:dateTime) |                                     | 3.5 (xsd:decimal) | 220 (xsd:decimal)  | Kalsoy (wd:Q212043)   | Kalsoy (en)   |

[Assistant] I'll run a final SPARQL query that (1) lists all items that are instances of 'tunnel' and have country Faroe Islands, (2) returns their instance/subclass types, extracts the year of inception and year of official opening using YEAR(), and (3) returns height, length, and associated islands. Extracting the year with YEAR() ensures any date-to-year conversion is done inside SPARQL (following the rule to perform computation in SPARQL). Now I'll execute that query.

[Tool]
Got 9 rows and 10 columns:
| item                               | itemLabel                | type               | typeLabel   | inceptionYear  | openingYear    | height            | length             | island                | islandLabel   |
| ---------------------------------- | ------------------------ | ------------------ | ----------- | -------------- | -------------- | ----------------- | ------------------ | --------------------- | ------------- |
| Norðskálatunnilin (wd:Q11170632)   | Norðskálatunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1976 (xsd:int) | 1976 (xsd:int) | 4.5 (xsd:decimal) | 2520 (xsd:decimal) | Eysturoy (wd:Q200939) | Eysturoy (en) |
| Sumbiartunnilin (wd:Q19391107)     | Sumbiartunnilin (en)     | tunnel (wd:Q44377) | tunnel (en) | 1997 (xsd:int) | 1997 (xsd:int) | 4.6 (xsd:decimal) | 3240 (xsd:decimal) | Suðuroy (wd:Q210309)  | Suðuroy (en)  |
| Kunoyartunnilin (wd:Q21793971)     | Kunoyartunnilin (en)     | tunnel (wd:Q44377) | tunnel (en) | 1988 (xsd:int) |                | 4.6 (xsd:decimal) | 3031 (xsd:decimal) | Kunoy (wd:Q212033)    | Kunoy (en)    |
| Hvannasundstunnilin (wd:Q21793973) | Hvannasundstunnilin (en) | tunnel (wd:Q44377) | tunnel (en) | 1967 (xsd:int) |                | 3.1 (xsd:decimal) | 2120 (xsd:decimal) | Borðoy (wd:Q202170)   | Borðoy (en)   |
| Leirvíkartunnilin (wd:Q21814470)   | Leirvíkartunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1985 (xsd:int) |                | 4.6 (xsd:decimal) | 2238 (xsd:decimal) | Eysturoy (wd:Q200939) | Eysturoy (en) |
| Leynartunnilin (wd:Q21814474)      | Leynartunnilin (en)      | tunnel (wd:Q44377) | tunnel (en) | 1977 (xsd:int) |                | 4.5 (xsd:decimal) | 760 (xsd:decimal)  | Streymoy (wd:Q192540) | Streymoy (en) |
| Sandvíkartunnilin (wd:Q21814482)   | Sandvíkartunnilin (en)   | tunnel (wd:Q44377) | tunnel (en) | 1969 (xsd:int) |                | 3.2 (xsd:decimal) | 1500 (xsd:decimal) | Suðuroy (wd:Q210309)  | Suðuroy (en)  |
| Árnafjarðartunnilin (wd:Q21814506) | Árnafjarðartunnilin (en) | tunnel (wd:Q44377) | tunnel (en) | 1965 (xsd:int) |                | 3.1 (xsd:decimal) | 1680 (xsd:decimal) | Borðoy (wd:Q202170)   | Borðoy (en)   |
| wd:Q56199617                       |                          | tunnel (wd:Q44377) | tunnel (en) | 1985 (xsd:int) |                | 3.5 (xsd:decimal) | 220 (xsd:decimal)  | Kalsoy (wd:Q212043)   | Kalsoy (en)   |

[Assistant] I will now prepare the final answer with the SPARQL query and the results. I must include my thought process before and after each step and function call — per developer instructions. I have already explained some steps; I will summarize the process, show the final SPARQL query, and present the results. Now I'll call the answer function with the final SPARQL query and the derived answer.

[Tool] Stopping


PREFIX p: <http://www.wikidata.org/prop/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX ps: <http://www.wikidata.org/prop/statement/>
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
SELECT DISTINCT ?person ?personLabel ?position ?employer ?employerLabel ?coords ?start ?startYear ?end ?endYear ?tenureMonths WHERE {
  ?person p:P39 ?statement .
  ?statement ps:P39 wd:Q3809586 .
  BIND( wd:Q3809586 AS ?position ) OPTIONAL {
    ?statement pq:P108 ?employer .
  }
  OPTIONAL {
    ?person wdt:P108 ?employer .
  }
  OPTIONAL {
    ?employer wdt:P625 ?coords .
  }
  OPTIONAL {
    ?statement pq:P580 ?start .
    BIND( YEAR( ?start ) AS ?startYear )
  }
  OPTIONAL {
    ?statement pq:P582 ?end .
    BIND( YEAR( ?end ) AS ?endYear )
  }
  OPTIONAL {
    ?statement pq:P580 ?s .
    ?statement pq:P582 ?e .
    BIND( ( ( YEAR( ?e ) - YEAR( ?s ) ) * 12 + ( MONTH( ?e ) - MONTH( ?s ) ) ) AS ?tenureMonths )
  }
  OPTIONAL {
    ?person rdfs:label ?personLabel .
    FILTER ( LANG( ?personLabel ) = "en" )
  }
  OPTIONAL {
    ?employer rdfs:label ?employerLabel .
    FILTER ( LANG( ?employerLabel ) = "en" )
  }
}
ORDER BY ?personLabel

Using entities:
Wikimedian in residence (wd:Q3809586), also known as GLAM Ambassador, Wikimedia Ambassador, Wikimedia Outreach Ambassador, Wikipedia Ambassador, Wikipedian at Large, etc.

Using properties:
employer (wd:P108 as wdt/pq), also known as employed by, of employer, organisation, organization, worked at, etc.
position held (wd:P39 as ps/p), also known as function, held position, holds position, job, office held, etc.
start time (wd:P580 as pq), also known as began, beginning, building date, effective, effectivity, etc.
end time (wd:P582 as pq), also known as abolished, cease date, cease operation, cease time, closed, etc.
coordinate location (wd:P625 as wdt), also known as co-ordinate location, co-ordinates, coordinates, co-ords, coords, etc.

Answer:
I searched Wikidata for people with a position-held (P39) statement whose value is "Wikimedian in residence" (wd:Q3809586). I retrieved employer (from the P39 statement qualifier P108 or the person-level employer property P108), employer coordinates (P625), start (P580) and end (P582) qualifiers on the P39 statement, and computed tenure length in months when both start and end were available.

Results (one row per person × employer found). All IRIs are returned in the SPARQL result; below I show labels and IRIs and the available fields from the query results:

1) Kime Rilla
- person: wd:Q117224803 (Kime Rilla)
- position: wd:Q3809586 (Wikimedian in residence)
- employer: wd:Q111085414 (Research Institute of World’s Ancient Traditions Cultures and Heritage)
- employer coordinates: POINT(95.811778 28.032067)
- start: 2022-03-01 (startYear: 2022)
- end: 2023-01-01 (endYear: 2023)
- tenure (months): 10

2) Lane Rasberry
- person: wd:Q26202725 (Lane Rasberry)
- position: wd:Q3809586 (Wikimedian in residence)
- employers found (multiple employer statements present):
  - wd:Q1957782 (Consumer Reports) — no start/end/tenure in the position statement
  - wd:Q213439 (University of Virginia) — employer coordinates: POINT(-78.503333 38.035556) — no start/end/tenure in the position statement
  - wd:Q68489500 (School of Data Science) — no start/end/tenure in the position statement

3) Marcus Cyron
- person: wd:Q15080578 (Marcus Cyron)
- position: wd:Q3809586 (Wikimedian in residence)
- employer: wd:Q695302 (German Archaeological Institute)
- employer coordinates: POINT(13.295220 52.464800)
- start: 2012-06-01 (startYear: 2012)
- end: 2012-11-01 (endYear: 2012)
- tenure (months): 5

Notes and caveats:
- The query only finds people who have a P39 statement whose value is wd:Q3809586. There may be other Wikimedians in residence not recorded with that exact P39 value or not recorded on Wikidata at all.
- Employer information can appear either as a qualifier on the P39 statement (pq:P108) or as a person-level employer (wdt:P108); this query attempts to capture both.
- Coordinates returned are the employer's P625 value (WKT POINT) where available.
- Tenure length in months is computed as (year difference * 12) + (month difference) using the statement start and end qualifiers; days are ignored. Tenure is only provided when both start (P580) and end (P582) qualifiers are present on the same P39 statement.

If you want I can:
- Expand the search to include people who are described as instances of the occupation "Wikimedian" and have employer patterns that imply a residency, or
- Return the raw query result table (IRIs) in CSV/JSON, or
- Try to normalize coordinates into lat/long separate values.

SPARQL query used (already executed above):

SELECT DISTINCT ?person ?personLabel ?position ?employer ?employerLabel ?coords ?start ?startYear ?end ?endYear ?tenureMonths WHERE {
  ?person p:P39 ?statement .
  ?statement ps:P39 wd:Q3809586 .
  BIND(wd:Q3809586 AS ?position)

  OPTIONAL { ?statement pq:P108 ?employer . }
  OPTIONAL { ?person wdt:P108 ?employer . }
  OPTIONAL { ?employer wdt:P625 ?coords . }

  OPTIONAL { ?statement pq:P580 ?start . BIND(YEAR(?start) AS ?startYear) }
  OPTIONAL { ?statement pq:P582 ?end . BIND(YEAR(?end) AS ?endYear) }

  OPTIONAL {
    ?statement pq:P580 ?s .
    ?statement pq:P582 ?e .
    BIND(((YEAR(?e)-YEAR(?s))*12 + (MONTH(?e)-MONTH(?s))) AS ?tenureMonths)
  }

  OPTIONAL { ?person rdfs:label ?personLabel . FILTER(LANG(?personLabel) = "en") }
  OPTIONAL { ?employer rdfs:label ?employerLabel . FILTER(LANG(?employerLabel) = "en") }
}
ORDER BY ?personLabel

Who are the Wikimedians in residence, and their employers (if available), items (if available), coordinates (if available), end years (if available), start years (if available), and lengths of tenure (in months) (if available)?

[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] Who are the Wikimedians in residence, and their employers (if available), items (if available), coordinates (if available), end years (if available), start years (if available), and lengths of tenure (in months) (if available)?

[Assistant]
Plan:
1. Search Wikidata for the item representing "Wikimedian in residence".
2. Inspect properties commonly used for such positions: employer (wdt:P108), coordinate location (wdt:P625), start time (wdt:P580) and end time (wdt:P582) of the role or position, length of tenure (we'll compute in SPARQL in months), and the item representing the role or position (if used).
3. Build a query that finds humans (?person) who have "Wikimedian in residence" as either an instance of (P31) or as a position held (P39) with qualifiers for start/end times and employer. Include coordinates and items where available. Compute tenure in months using months-between formula in SPARQL.
4. Execute intermediate searches and then the final query.

I'll start by searching for the "Wikimedian in residence" item.

[Tool]
Top 10 entity alternatives:
1. Wikimedian in residence (wd:Q3809586), also known as GLAM Ambassador, Wikimedia Ambassador, Wikimedia Outreach Ambassador, Wikipedia Ambassador, Wikipedian at Large, etc.: professional role in Wikimedia development / occupation; occasionally voluntary / is subclass of media professional / is subclass of Wikimedian / is instance of position
2. Wikimedians in Residence Exchange Network (wd:Q63214641), also known as Wikimedians in Residence Exchange Network User Group, WREN: is instance of professional association / is instance of Wikimedia user group / Wikimedia user group
3. artist-in-residence (wd:Q713223, matched via artist in residence), also known as artistic residency, artist in residence, artist-in-residence program, artist's residence, arts residency, etc.: program that invites artists to work at a specific venue or place for a period of time / is subclass of creative residency / is subclass of cultural center / is subclass of cultural centre / is instance of position / is instance of project / is subclass of artist / is subclass of award
4. Residence in Xijiashan (wd:Q10932244): is instance of cultural heritage of China
5. Kalichstein-Laredo-Robinson trio (wd:Q16851425, matched via Ensemble in Residence), also known as Ensemble in Residence: is instance of musical ensemble / US musical ensemble
6. Diplomats in Residence (wd:Q28405424), also known as DIRs: is instance of diplomat / is instance of position
7. writer in residence (wd:Q2328028), also known as resident writer: scholarship for writers including right of free local residence for several months / is instance of advancement award / is subclass of literary award / is instance of literary term / is instance of scholarship / is instance of occupation / is instance of position
8. Entrepreneur in residence (wd:Q5380743), also known as EIR: is instance of position / organizational position
9. Thinker in Residence (wd:Q7784560): is instance of government programme / South Australian government program / is instance of government program
10. Wikimedian in Residence: Expanding Artists’ Visibility and Knowledge Access (wd:Q130502333): program event at WikiConference North America 2024 / is instance of conference presentation

[Assistant] I'll look for statements where position held (P39) is Wikimedian in residence (wd:Q3809586) to find people who held that position.

[Tool]
Got 3 rows and 3 columns:
| subject                      | property                | object                                |
| ---------------------------- | ----------------------- | ------------------------------------- |
| Kime Rilla (wd:Q117224803)   | position held (wdt:P39) | Wikimedian in residence (wd:Q3809586) |
| Marcus Cyron (wd:Q15080578)  | position held (wdt:P39) | Wikimedian in residence (wd:Q3809586) |
| Lane Rasberry (wd:Q26202725) | position held (wdt:P39) | Wikimedian in residence (wd:Q3809586) |

[Assistant] I'll inspect the statements for one of the found people (Marcus Cyron) to see how the position held statement is structured and which qualifiers are used.

[Tool]
Got 978 rows and 3 columns, showing the first 10 rows below:
| subject                     | property                         | object                                                                       |
| --------------------------- | -------------------------------- | ---------------------------------------------------------------------------- |
| Marcus Cyron (wd:Q15080578) | instance of (wdt:P31)            | human (wd:Q5)                                                                |
| Marcus Cyron (wd:Q15080578) | occupation (wdt:P106)            | Wikimedian (wd:Q41546637)                                                    |
| Marcus Cyron (wd:Q15080578) | sex or gender (wdt:P21)          | male (wd:Q6581097)                                                           |
| Marcus Cyron (wd:Q15080578) | given name (wdt:P735)            | Marcus (wd:Q4642)                                                            |
| Marcus Cyron (wd:Q15080578) | date of birth (wdt:P569)         | 1976-01-06T00:00:00Z (xsd:dateTime)                                          |
| Marcus Cyron (wd:Q15080578) | Commons category (wdt:P373)      | Marcus Cyron                                                                 |
| Marcus Cyron (wd:Q15080578) | image (wdt:P18)                  | <http://commons.wikimedia.org/wiki/Special:FilePath/Marcus%20Cyron%2005.jpg> |
| Marcus Cyron (wd:Q15080578) | family name (wdt:P734)           | Cyron (wd:Q30752988)                                                         |
| Marcus Cyron (wd:Q15080578) | country of citizenship (wdt:P27) | Germany (wd:Q183)                                                            |
| Marcus Cyron (wd:Q15080578) | VIAF cluster ID (wdtn:P214)      | <http://viaf.org/viaf/130940076>                                             |
| ...                         | ...                              | ...                                                                          |

[Assistant]
I need to retrieve the P39 statements with qualifiers (start time P580, end time P582, employer P108, coordinate location P625). P39 is a statement property; the direct wdt:P39 won't include qualifiers, need to use the statement form p:P39 and ps:P39 and qualifiers. I'll build a query to find humans with a P39 statement whose value is Wikimedian in residence (wd:Q3809586), and get qualifiers employer (P108), start time (P580), end time (P582), and also maybe the 'item' (the subject item? user asked 'items (if available)'—likely they mean the position statement item? Maybe they mean the 'position item'—we can include the statement node? The instruction earlier said queries should return identifiers/IRIs of items. I'll include ?person and optionally ?positionStatement ?start ?end ?employer ?coords and compute tenure in months using months-between calculation.

First I'll write a query selecting persons with p:P39 ?stmt; ?stmt ps:P39 wd:Q3809586; then optional qualifiers pq? Wait qualifiers use p:P39 ?stmt; ?stmt ps:P39 ?positionItem. Qualifiers are on ?stmt with pq:P580? No qualifiers are at p:P39/?p:P39 ?statement/psv: but more standard: ?person p:P39 ?statement. ?statement ps:P39 wd:Q3809586. Then OPTIONAL { ?statement pq:P108 ?employer . } etc. But employer is property P108; it's likely recorded either on the statement as qualifier pq:P108 or on the person as wdt:P108? Employer for a position is often qualifier P108 on the P39 statement. So include both: statement qualifier pq:P108 and person-level wdt:P108. Also coordinates: coordinate location is P625 might be property on employer or on the position item? Alternatively, the position item might have coordinate location. But question asks "their employers (if available), items (if available), coordinates (if available), end years (if available), start years (if available), and lengths of tenure (in months) (if available)?" I'm interpreting "items (if available)" as the Wikidata item for the position instance? Hmm ambiguous. Maybe they want the Wikidata item that represents the position held (i.e., the 'Wikimedian in residence' item wd:Q3809586)? But that's same for all. Or they want items of the 'employer' organization, or items representing the 'residence' appointment? Better to include ?employer (IRI), ?employerLabel optional.

Also include coordinate location of the employer (?employer wdt:P625 ?coords). Also maybe the person has coordinate location? Probably employer's coordinates: e.g. person was Wikimedian in residence at "British Library" with coordinates for the library. So include optional triple ?employer wdt:P625 ?coords.

Compute length in months. Compute months between start and end. If end missing, maybe use current date? But instruction: "Do not perform additional computation on the result of the SPARQL query to determine the answer. All computation should be done solely within SPARQL." So we can compute tenure in months in SPARQL using functions. QLever likely supports xsd:dateTime operations? We can compute months: (year2-year1)*12 + (month2-month1) + ... maybe discarding days. Use YEAR(?end) etc. In SPARQL, functions YEAR() and MONTH() are available per SPARQL 1.1. QLever likely supports them.

But start/end are stored as xsd:dateTime literals on qualifiers pq:P580 and pq:P582. We should use that.

Construct expression: ((YEAR(?end)-YEAR(?start))*12) + (MONTH(?end)-MONTH(?start)) AS ?tenureMonths. Need to guard when ?end or ?start missing: only compute when both present. Use BIND with IF(BOUND(?end) && BOUND(?start), ... , UNDEF) but SPARQL doesn't allow UNDEF; return no binding or use OPTIONAL for BIND inside. Better: use OPTIONAL { ... BIND(...) } pattern: Enclose computation inside OPTIONAL { ?statement pq:P580 ?start . ?statement pq:P582 ?end . BIND(...) } But qualifiers might be present singly. To include start and end optionally separately too, but computation only if both present; we can do OPTIONAL { ?statement pq:P580 ?start . ?statement pq:P582 ?end . BIND(((YEAR(?end)-YEAR(?start))*12 + (MONTH(?end)-MONTH(?start))) AS ?tenureMonths) }.

Also list items for position? Might include ?positionItem = ps:P39 value which is wd:Q3809586; but include statement and the position item maybe used as ?position. We'll include ?position variable bound to ps:P39.

Also include the statement node IRI? p:P39 ?statement will be a blank node or statement node with IRI s:... in Wikidata data model. But the requirement says "The SPARQL query should always return the actual identifiers / IRIs of the items in its result." So return ?person, ?position (item), ?employer (IRI), ?coords, ?start, ?end, ?tenureMonths. Also include labels as optional with rdfs:label filters.

Let's construct query.

We also need to run the query. But before final query, verify more persons: earlier list found 3 rows via wdt:P39 direct; but P39 statement search might find more (some statements may not use wdt:P39). Let's run a query to get all subjects with a P39 statement equal to wd:Q3809586 via p:P39 ps:P39. Use SELECT DISTINCT ?person ?statement.

Let's craft and execute.

I'll run an initial SPARQL query to find all people with a position held (P39) statement whose value is Wikimedian in residence (Q3809586), and retrieve statement-level qualifiers like start/end/employer when available, plus employer coordinates. I'll compute tenure in months when both start and end are present.

[Tool]
Got 5 rows and 10 columns:
| person                       | personLabel        | statement                                         | position                              | employer                                                                               | employerLabel                                                               | coords                                       | start                               | end                                 | tenureMonths |
| ---------------------------- | ------------------ | ------------------------------------------------- | ------------------------------------- | -------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | -------------------------------------------- | ----------------------------------- | ----------------------------------- | ------------ |
| Kime Rilla (wd:Q117224803)   | Kime Rilla (en)    | s:Q117224803-229342cd-49ea-998b-eabb-bb4cc57356f2 | Wikimedian in residence (wd:Q3809586) | Research Institute of World’s Ancient Traditions Cultures and Heritage (wd:Q111085414) | Research Institute of World’s Ancient Traditions Cultures and Heritage (en) | POINT(95.811778 28.032067) (geo:wktLiteral)  | 2022-03-01T00:00:00Z (xsd:dateTime) | 2023-01-01T00:00:00Z (xsd:dateTime) | 10 (xsd:int) |
| Lane Rasberry (wd:Q26202725) | Lane Rasberry (en) | s:Q26202725-B6FA63FC-8172-4F2C-90A3-6B1B61A6B290  | Wikimedian in residence (wd:Q3809586) | Consumer Reports (wd:Q1957782)                                                         | Consumer Reports (en)                                                       |                                              |                                     |                                     |              |
| Lane Rasberry (wd:Q26202725) | Lane Rasberry (en) | s:Q26202725-B6FA63FC-8172-4F2C-90A3-6B1B61A6B290  | Wikimedian in residence (wd:Q3809586) | University of Virginia (wd:Q213439)                                                    | University of Virginia (en)                                                 | POINT(-78.503333 38.035556) (geo:wktLiteral) |                                     |                                     |              |
| Lane Rasberry (wd:Q26202725) | Lane Rasberry (en) | s:Q26202725-B6FA63FC-8172-4F2C-90A3-6B1B61A6B290  | Wikimedian in residence (wd:Q3809586) | School of Data Science (wd:Q68489500)                                                  | School of Data Science (en)                                                 |                                              |                                     |                                     |              |
| Marcus Cyron (wd:Q15080578)  | Marcus Cyron (en)  | s:Q15080578-98d08af9-439f-d2bb-714b-e0bc17a4a405  | Wikimedian in residence (wd:Q3809586) | German Archaeological Institute (wd:Q695302)                                           | German Archaeological Institute (en)                                        | POINT(13.295220 52.464800) (geo:wktLiteral)  | 2012-06-01T00:00:00Z (xsd:dateTime) | 2012-11-01T00:00:00Z (xsd:dateTime) | 5 (xsd:int)  |

[Assistant] I'll run a refined SPARQL query that returns each person (their item), the Wikimedian-in-residence position item, employers (items), employer coordinates, start and end dates and their years, and tenure length in months (computed from start/end) where both dates are available. Then I'll execute it to get the final results.

[Tool]
Got 5 rows and 11 columns, showing the first 5 and last 5 columns below:
| person                       | personLabel        | position                              | employer                                                                               | employerLabel                                                               | ... | start                               | startYear      | end                                 | endYear        | tenureMonths |
| ---------------------------- | ------------------ | ------------------------------------- | -------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | --- | ----------------------------------- | -------------- | ----------------------------------- | -------------- | ------------ |
| Kime Rilla (wd:Q117224803)   | Kime Rilla (en)    | Wikimedian in residence (wd:Q3809586) | Research Institute of World’s Ancient Traditions Cultures and Heritage (wd:Q111085414) | Research Institute of World’s Ancient Traditions Cultures and Heritage (en) | ... | 2022-03-01T00:00:00Z (xsd:dateTime) | 2022 (xsd:int) | 2023-01-01T00:00:00Z (xsd:dateTime) | 2023 (xsd:int) | 10 (xsd:int) |
| Lane Rasberry (wd:Q26202725) | Lane Rasberry (en) | Wikimedian in residence (wd:Q3809586) | Consumer Reports (wd:Q1957782)                                                         | Consumer Reports (en)                                                       | ... |                                     |                |                                     |                |              |
| Lane Rasberry (wd:Q26202725) | Lane Rasberry (en) | Wikimedian in residence (wd:Q3809586) | University of Virginia (wd:Q213439)                                                    | University of Virginia (en)                                                 | ... |                                     |                |                                     |                |              |
| Lane Rasberry (wd:Q26202725) | Lane Rasberry (en) | Wikimedian in residence (wd:Q3809586) | School of Data Science (wd:Q68489500)                                                  | School of Data Science (en)                                                 | ... |                                     |                |                                     |                |              |
| Marcus Cyron (wd:Q15080578)  | Marcus Cyron (en)  | Wikimedian in residence (wd:Q3809586) | German Archaeological Institute (wd:Q695302)                                           | German Archaeological Institute (en)                                        | ... | 2012-06-01T00:00:00Z (xsd:dateTime) | 2012 (xsd:int) | 2012-11-01T00:00:00Z (xsd:dateTime) | 2012 (xsd:int) | 5 (xsd:int)  |

[Tool] Stopping