PREFIX fb: <http://rdf.freebase.com/ns/>
SELECT ?playoff_series ?date WHERE {
  ?playoff_series ?p fb:m.0jnq8 .
  ?playoff_series ?date_p ?date .
}
LIMIT 10

Got 10 rows and 2 columns:
| playoff_series                         | date                          |
| -------------------------------------- | ----------------------------- |
| Award Nominee (fb:award.award_nominee) | Apbalvojuma kandidāts (lv)    |
| Award Nominee (fb:award.award_nominee) | Auhinnakandidaat (et)         |
| Award Nominee (fb:award.award_nominee) | Auszeichnungsnominierung (de) |
| Award Nominee (fb:award.award_nominee) | Award Nominee (en)            |
| Award Nominee (fb:award.award_nominee) | Award Nominee (en-GB)         |
| Award Nominee (fb:award.award_nominee) | Award Nominee (lt)            |
| Award Nominee (fb:award.award_nominee) | Calon Anugerah (ms)           |
| Award Nominee (fb:award.award_nominee) | Candidat la premiu (ro)       |
| Award Nominee (fb:award.award_nominee) | Candidato a un premio (it)    |
| Award Nominee (fb:award.award_nominee) | Díjjelölt (hu)                |

Freebase does not appear to model individual NHL playoff series or playoff series wins for teams like the Los Angeles Kings. The available properties for the team and for the playoff events only cover overall championships, seasons, or general playoff events, but do not provide data about specific series wins or the years in which a team last won a playoff series. Therefore, it is not possible to answer the question with a SPARQL query using the current Freebase data structure.

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

You have access to the following knowledge graphs:
freebase at http://galera:7002

You can use the following SPARQL prefixes implicitly in all functions:
fb: <http://rdf.freebase.com/ns/
fbkey: <http://rdf.freebase.com/key/
rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: <http://www.w3.org/2000/01/rdf-schema#
owl: <http://www.w3.org/2002/07/owl#
xsd: <http://www.w3.org/2001/XMLSchema#
foaf: <http://xmlns.com/foaf/0.1/
skos: <http://www.w3.org/2004/02/skos/core#
dct: <http://purl.org/dc/terms/
dc: <http://purl.org/dc/elements/1.1/
prov: <http://www.w3.org/ns/prov#
schema: <http://schema.org/
geo: <http://www.opengis.net/ont/geosparql#
geosparql: <http://www.opengis.net/ont/geosparql#
gn: <http://www.geonames.org/ontology#
bd: <http://www.bigdata.com/rdf#
hint: <http://www.bigdata.com/queryHints#
wikibase: <http://wikiba.se/ontology#
qb: <http://purl.org/linked-data/cube#
void: <http://rdfs.org/ns/void#

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. Use the functions to search for 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. Use the execute function to get feedback on intermediate queries. You can go back and forth between knowledge graph searches and SPARQL query executions to refine the query.
4. Use the answer or cancel function to finalize your answer and stop the generation process.

Additional rules:
1. Explain your thought process before and after each step and function call.
2. Do not assume or make up any entities or properties without verifying them with the knowledge graphs and functions.
3. 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.
4. 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.
5. 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.
6. For questions with a "True" or "False" answer the SPARQL query should be an ASK query.
7. 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.

[User] when was the last time the la kings won a playoff series?

[Assistant]
Let's break down the question:

1. The user wants to know the last time the LA Kings (Los Angeles Kings, an NHL team) won a playoff series.
2. We need to identify the entity for the LA Kings.
3. We need to find playoff series that the LA Kings won, and get the most recent one.
4. We need to find the date or season of that series win.

Step 1: Search for the LA Kings entity in Freebase.

[Tool]
Top 10 entity alternatives:
1. LA Kings, also known as Cupcake Wars: LA Kings, LA Kings (fb:m.0f_wg3n): Four gifted cupcake bakers battle for the chance to have their t... Night Fan Fest to celebrate the start of the new hockey season., has type Competition
2. Latin Kings (fb:m.03x08w): The Almighty Latin King and Queen Nation is the largest and one ...expanded during a period of increased migration to the mainland., has type Organization
3. Kings Langley (fb:m.0277dy): Kings Langley is a historic village and civil parish in Hertford...s Langel' Regis in 1254. The name means 'long wood or clearing'., has type City/Town/Village
4. Latin kings of Alba Longa, also known as Latin kings (fb:m.025w1nq): The Latin kings of Alba Longa, also referred to as the Latin kin... of this line were brought in from neighboring Etruria to reign.
5. Kings Langley, also known as Kings Langley, New South Wales (fb:m.07kcyz): Kings Langley is a suburb of Sydney, in the state of New South W...own. Kings Langley is part of the Greater Western Sydney region., has type Australian Suburb
6. Latin Kings (fb:m.03fg2rj): has type Musical Release
7. Kings Lake (fb:m.0yqj_kq): Kings Lake was an American bred, Irish-trained Thoroughbred race...end of the season and had moderate success as a sire of winners., has type Pedigreed animal
8. Kings Landing, also known as Kings Landing, North Carolina (fb:m.04b6j7s): has type City/Town/Village
9. Kings Lake, also known as Kings Lake, Missouri (fb:m.04b1ypt): has type City/Town/Village
10. Kings Landing, also known as Kings Landing, Michigan (fb:m.049_tsh): has type City/Town/Village

[Assistant]
It appears that the direct entity for the Los Angeles Kings NHL team is not among the top results for "LA Kings." The closest match is "LA Kings, also known as Cupcake Wars: LA Kings," which is not the hockey team.

Let's try searching for "Los Angeles Kings" instead, as that is the full name of the NHL team.

[Tool]
Top 10 entity alternatives:
1. Los Angeles Kings, also known as Los Angeles Kings Hockey Club (fb:m.0jnq8): The Los Angeles Kings are a professional ice hockey team based i...of the franchise that raised hockey's popularity in Los Angeles., Los Angeles Kings Hockey Club  is a 2013 Telly Award winner., has type Professional Sports Team
2. Los Angeles Kings (fb:m.06l8n7g): has type Book
3. Los Angeles Kings Playoffs (fb:m.0_gh5k6): Los Angeles Kings Playoffs is a 2013 Telly Award winning TV program, created for Fox Sports West and Prime Ticket., has type Award-Winning Work
4. Los Angeles Kings seasons (fb:m.08sq6q_)
5. 2013–14 Los Angeles Kings season (fb:m.0vxfpr6): The 2013–14 Los Angeles Kings season was the 47th season for the...al Hockey League franchise that was established on June 5, 1967.
6. 2011–12 Los Angeles Kings season (fb:m.0gg7js7): The 2011–12 Los Angeles Kings season was the 45th season for the...n to capture the first Stanley Cup championship in team history.
7. 2014–15 Los Angeles Kings season (fb:m.010hlj3k): The 2014–15 Los Angeles Kings season was the 48th season for the... the playoffs after winning the Stanley Cup the previous season.
8. 2012–13 Los Angeles Kings season (fb:m.0k0sj2b): The 2012–13 Los Angeles Kings season was the 46th season for the...nded by the Chicago Blackhawks in the Western Conference Finals.
9. 2010–11 Los Angeles Kings season (fb:m.0c02kbk): The 2010–11 Los Angeles Kings season was the 44th season for the National Hockey League franchise.
10. 2015–16 Los Angeles Kings season (fb:m.013cc_xq): The 2015–16 Los Angeles Kings season will be the 49th season for...al Hockey League franchise that was established on June 5, 1967.

[Assistant]
The correct entity for the Los Angeles Kings NHL team is "Los Angeles Kings" with the ID fb:m.0jnq8.

Next, we need to find playoff series that the Los Angeles Kings won. Let's search for properties related to "playoff series win" or similar for this entity.

[Tool]
Top 10 property alternatives:
1. Championships (fb:sports.sports_team.championships): links to type Sports League Championship Event, part of Sports Team schema
2. Sports Team Location (fb:sports.sports_team.location): links to type Sports Team Location, part of Sports Team schema
3. Sport (fb:sports.sports_team.sport): part of Sports Team schema, links to type Sport
4. Arena/Stadium (fb:sports.sports_team.arena_stadium): links to type Sports Facility, part of Sports Team schema
5. Conference (fb:ice_hockey.hockey_team.conference): links to type Ice hockey conference, part of Ice hockey team schema
6. Venue (fb:sports.sports_team.venue): links to type Team/venue relationship, part of Sports Team schema
7. Roster (fb:sports.sports_team.roster): links to type Sports team roster, part of Sports Team schema
8. Division (fb:ice_hockey.hockey_team.division): links to type Ice hockey division, part of Ice hockey team schema
9. Key (fb:type.object.key): part of Object schema, links to type Key
10. Coach (fb:ice_hockey.hockey_team.coach): links to type Ice hockey coach, part of Ice hockey team schema

No other items found

[Assistant]
There isn't a direct property for "playoff series win" in the properties for the Los Angeles Kings entity. However, the "Championships" property (fb:sports.sports_team.championships) may contain information about playoff series wins, especially for Stanley Cup wins.

But the user is asking about any playoff series win, not just championships. Let's look for entities or properties related to "NHL playoff series" or "NHL playoffs" to see if there is a more granular way to find individual series wins.

I'll search for entities related to "NHL playoff series."

[Tool]
Top 10 entity alternatives:
1. NHL 07, also known as NHL series (fb:m.02_6h4d): has type Video Game Version
2. NHL series (fb:m.045x03l): has type Video Game Version
3. NHL series (fb:m.040ttym): has type Video Game Version
4. NHL series (fb:m.045x03f): has type Video Game Version
5. NHL series (fb:m.04d59l_): has type Video Game Version
6. NHL series (fb:m.04d59lp): has type Video Game Version
7. NHL series (fb:m.04d59lv): has type Video Game Version
8. NHL series (fb:m.04d59m4): has type Video Game Version
9. NHL series (fb:m.04d59m9): has type Video Game Version
10. NHL series (fb:m.04d59mg): has type Video Game Version

[Assistant] The search for "NHL playoff series" is returning video game series, not actual playoff series entities. Let's try searching for "NHL playoffs" to see if there are entities or properties related to the actual playoff events.

[Tool]
Top 10 entity alternatives:
1. Stanley Cup playoffs, also known as nhl playoffs, stanley cup playoffs, The Stanley Cup playoffs of the National Hockey League, The time frame for the The Stanley Cup Playoffs (fb:m.0g5qm_d): The Stanley Cup playoffs is an elimination tournament in the Nat...n the NHL took over the Cup in 1926, to the current setup today., has type Recurring event
2. National Hockey League, also known as Ligue Nationale de Hockey, LNH, NHL (fb:m.05gwr): The National Hockey League is a professional ice hockey league c...ctions and relocations, is now composed of 30 active franchises., has type Sports Association
3. Non-Hodgkin lymphoma, also known as NHL, Nonhodgkins lymphoma, Non-hodgkins lymphoma, Non-hodgkin's lymphoma, Non hodgkins lymphoma (fb:m.0jdj1): The non-Hodgkin lymphomas are diverse group of blood cancers tha...lymphoma. Five year survival rates in the United States are 69%., has type Disease or medical condition
4. Playoffs, also known as Playoff (fb:m.0jxrg): The playoffs, postseason and/or finals of a sports league are a ...lower-placed teams – the term "wild card" refers to these teams.
5. NHL (fb:m.037yx9): NHL is a series of professional ice hockey simulation video game...ich enables the use of the League's player names and likenesses., has type Video Game Series
6. NHL liajki..., also known as NHL, NHL liajki siski... (fb:m.01vqvqm): has type Musical Artist
7. Nhl, also known as NHL, the world of professional ice hockey (fb:m.06lhh1v): has type Book
8. Playoffs (fb:m.0xf15vv): has type Musical Recording
9. NHL (fb:m.012jqx4l): has type Musical Recording
10. NHL (fb:m.0fqgv90): has type Musical Recording

[Assistant]
The entity "Stanley Cup playoffs" (fb:m.0g5qm_d) is the correct one for NHL playoffs. Since the playoffs are a recurring event, perhaps each season's playoff is represented as a sub-entity, and each series as well.

Let's check the properties of the "Stanley Cup playoffs" entity to see if there are links to individual series or team results.

[Tool]
Top 10 property alternatives:
1. Key (fb:type.object.key): part of Object schema, links to type Key
2. Description (fb:common.topic.description): part of Topic schema, links to type Text
3. Name (fb:type.object.name): part of Object schema, links to type Text
4. Official website (fb:common.topic.official_website): part of Topic schema, links to type URI
5. Article (fb:common.topic.article): links to type Document, part of Topic schema
6. Instances (fb:time.recurring_event.instances): part of Recurring event schema, links to type Event
7. Type (fb:type.object.type): part of Object schema, links to type Type
8. Notable types (fb:common.topic.notable_types): part of Topic schema, links to type Type
9. Web Link(s) (fb:common.topic.webpage): links to type Webpage, part of Topic schema
10. Also known as (fb:common.topic.alias): part of Topic schema, links to type Text

No other items found

[Assistant]
There is a property "Instances" (fb:time.recurring_event.instances) which likely links to each year's Stanley Cup playoffs event. We can use this to find individual playoff events by year.

Let's list some instances of the Stanley Cup playoffs to see how they are structured and if they contain information about series or team results.

[Tool]
Got 3 rows and 3 columns:
| subject                             | property                                      | object                                   |
| ----------------------------------- | --------------------------------------------- | ---------------------------------------- |
| Stanley Cup playoffs (fb:m.0g5qm_d) | Instances (fb:time.recurring_event.instances) | 2013 Stanley Cup playoffs (fb:m.0swl0rm) |
| Stanley Cup playoffs (fb:m.0g5qm_d) | Instances (fb:time.recurring_event.instances) | 2012 Stanley Cup playoffs (fb:m.0j62572) |
| Stanley Cup playoffs (fb:m.0g5qm_d) | Instances (fb:time.recurring_event.instances) | 1984 Stanley Cup playoffs (fb:m.0_850jg) |

[Assistant]
We have found that each year's Stanley Cup playoffs is an instance entity, such as "2012 Stanley Cup playoffs" (fb:m.0j62572) and "2013 Stanley Cup playoffs" (fb:m.0swl0rm).

Next, let's check the properties of one of these instances (e.g., 2012 Stanley Cup playoffs) to see if there are links to series, teams, or results.

[Tool]
Top 10 property alternatives:
1. Key (fb:type.object.key): part of Object schema, links to type Key
2. Description (fb:common.topic.description): part of Topic schema, links to type Text
3. Name (fb:type.object.name): part of Object schema, links to type Text
4. Article (fb:common.topic.article): links to type Document, part of Topic schema
5. Type (fb:type.object.type): part of Object schema, links to type Type
6. Notable types (fb:common.topic.notable_types): part of Topic schema, links to type Type
7. Instance of recurring event (fb:time.event.instance_of_recurring_event): links to type Recurring event, part of Event schema
8. Start date (fb:time.event.start_date): links to type Date/Time, part of Event schema
9. Notable for (fb:common.topic.notable_for): links to type notable_for, part of Topic schema

No other items found

[Assistant] There are no direct properties related to "series" or "team results" for the 2012 Stanley Cup playoffs entity. Let's try searching for properties related to "team" or "winner" for this playoff instance to see if we can find which teams won series or advanced.

[Tool]
Top 10 property alternatives:
1. Name (fb:type.object.name): part of Object schema, links to type Text
2. Key (fb:type.object.key): part of Object schema, links to type Key
3. Article (fb:common.topic.article): links to type Document, part of Topic schema
4. Description (fb:common.topic.description): part of Topic schema, links to type Text
5. Type (fb:type.object.type): part of Object schema, links to type Type
6. Notable types (fb:common.topic.notable_types): part of Topic schema, links to type Type
7. Start date (fb:time.event.start_date): links to type Date/Time, part of Event schema

No other items found

[Assistant]
There are no direct properties for "team" or "winner" on the playoff instance entity either. Since the playoff instance does not directly link to teams or series, let's try a different approach.

Let's search for entities of type "NHL playoff series" or "Stanley Cup playoff series" to see if such entities exist, and if so, what properties they have.

[Tool]
Top 10 entity alternatives:
1. Stanley Cup playoffs, also known as nhl playoffs, stanley cup playoffs, The Stanley Cup playoffs of the National Hockey League, The time frame for the The Stanley Cup Playoffs (fb:m.0g5qm_d): The Stanley Cup playoffs is an elimination tournament in the Nat...n the NHL took over the Cup in 1926, to the current setup today., has type Recurring event
2. 2013 Stanley Cup playoffs (fb:m.0swl0rm): The 2013 Stanley Cup playoffs of the National Hockey League bega... three years, all three teams from California made the playoffs., has type Event
3. 2009 Stanley Cup playoffs (fb:m.05fc9m_): The 2009 Stanley Cup playoffs of the National Hockey League bega...ship after losing the first two games of the series on the road.
4. 2012 Stanley Cup playoffs (fb:m.0j62572): The 2012 Stanley Cup playoffs of the National Hockey League bega... became the first team to make the Final undefeated on the road., has type Event
5. 2015 Stanley Cup playoffs (fb:m.0130gzd3): The 2015 Stanley Cup playoffs of the National Hockey League bega...me a 14-point deficit in the standings to clinch a playoff spot.
6. 2006 Stanley Cup playoffs (fb:m.0bpnwy): The 2006 Stanley Cup playoffs for the National Hockey League cha...he Western Conference and participate in the Stanley Cup Finals., has type Sports League Championship Event
7. 2004 Stanley Cup playoffs (fb:m.0dcnp7): The 2004 Stanley Cup playoffs for the National Hockey League beg...her Los Angeles Kings nor Anaheim Ducks made it to the playoffs., has type Sports League Championship Event
8. 2011 Stanley Cup playoffs (fb:m.0gkz6yz): The 2011 Stanley Cup playoffs of the National Hockey League bega...avid Krejci lead all playoff scorers with 23 points in 25 games.
9. 2010 Stanley Cup playoffs (fb:m.0bmbfwf): The 2010 Stanley Cup playoffs of the National Hockey League bega...ries, when they beat the Washington Capitals in the first round.
10. 2007 Stanley Cup playoffs (fb:m.02p90mp): The 2007 Stanley Cup playoffs of the National Hockey League bega...ers qualified for the playoffs in their twelve years in Georgia.

[Assistant]
The entities found are for the overall playoff events, not individual series. However, the descriptions mention series within the playoffs, such as "when they beat the Washington Capitals in the first round."

Let's try searching for properties related to "round" or "series" for one of these playoff event entities (e.g., 2012 Stanley Cup playoffs) to see if there are links to specific series or matchups.

[Tool]
Top 10 property alternatives:
1. Key (fb:type.object.key): part of Object schema, links to type Key
2. Type (fb:type.object.type): part of Object schema, links to type Type
3. Start date (fb:time.event.start_date): links to type Date/Time, part of Event schema
4. Name (fb:type.object.name): part of Object schema, links to type Text
5. Article (fb:common.topic.article): links to type Document, part of Topic schema
6. Description (fb:common.topic.description): part of Topic schema, links to type Text
7. Notable types (fb:common.topic.notable_types): part of Topic schema, links to type Type
8. Instance of recurring event (fb:time.event.instance_of_recurring_event): links to type Recurring event, part of Event schema
9. Notable for (fb:common.topic.notable_for): links to type notable_for, part of Topic schema
10. Topic equivalent webpage (fb:common.topic.topic_equivalent_webpage): part of Topic schema, links to type URI

No other items found

[Assistant]
There are still no direct properties for "round" or "series" on the playoff event entity. Since the playoff structure is not directly modeled, let's try a different approach.

Let's search for properties of the Los Angeles Kings entity related to "playoff series" or "playoff wins" to see if there is a direct link from the team to its playoff series wins.

[Tool]
Top 10 property alternatives:
1. Championships (fb:sports.sports_team.championships): links to type Sports League Championship Event, part of Sports Team schema
2. Sports Team Location (fb:sports.sports_team.location): links to type Sports Team Location, part of Sports Team schema
3. Sport (fb:sports.sports_team.sport): part of Sports Team schema, links to type Sport
4. Coach (fb:ice_hockey.hockey_team.coach): links to type Ice hockey coach, part of Ice hockey team schema
5. Awards Won (fb:award.award_winner.awards_won): part of Award Winner schema, links to type Award Honor
6. Roster (fb:sports.sports_team.roster): links to type Sports team roster, part of Sports Team schema
7. Team Mascot (fb:sports.sports_team.team_mascot): part of Sports Team schema, links to type Mascot
8. Coaches (fb:sports.sports_team.coaches): links to type Sports team coach tenure, part of Sports Team schema
9. Arena/Stadium (fb:sports.sports_team.arena_stadium): links to type Sports Facility, part of Sports Team schema
10. Key (fb:type.object.key): part of Object schema, links to type Key

No other items found

[Assistant]
There is no direct property for "playoff win" or "playoff series win" for the Los Angeles Kings entity either. The only relevant property is "Championships," which is too restrictive.

Given the structure of the data, it seems that Freebase may not model individual playoff series wins directly, but may have information about playoff appearances or championships.

As a last attempt, let's search for properties related to "playoff appearance" for the Los Angeles Kings to see if there is a list of years or events in which they advanced in the playoffs.

[Tool]
Top 10 property alternatives:
1. Sports Team Location (fb:sports.sports_team.location): links to type Sports Team Location, part of Sports Team schema
2. Championships (fb:sports.sports_team.championships): links to type Sports League Championship Event, part of Sports Team schema
3. Roster (fb:sports.sports_team.roster): links to type Sports team roster, part of Sports Team schema
4. Sport (fb:sports.sports_team.sport): part of Sports Team schema, links to type Sport
5. Arena/Stadium (fb:sports.sports_team.arena_stadium): links to type Sports Facility, part of Sports Team schema
6. Team Mascot (fb:sports.sports_team.team_mascot): part of Sports Team schema, links to type Mascot
7. Key (fb:type.object.key): part of Object schema, links to type Key
8. Conference (fb:ice_hockey.hockey_team.conference): links to type Ice hockey conference, part of Ice hockey team schema
9. Member of (fb:sports.sports_team.league): links to type Sports league participation, part of Sports Team schema
10. Venue (fb:sports.sports_team.venue): links to type Team/venue relationship, part of Sports Team schema

No other items found

[Assistant]
It appears that Freebase does not have a property for "playoff appearance" or "playoff series win" for the Los Angeles Kings. The data model does not seem to support querying for individual playoff series wins or the last time the team won a playoff series.

Given these limitations, I am unable to construct a SPARQL query that answers the question "when was the last time the LA Kings won a playoff series?" using the available Freebase data.

I will provide a detailed explanation and stop the process.

[Tool] Stopped generation process