user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Sports team owner Wyc Grousbeck first won a championship in what year? 
Knowledge Triplets: Boston Celtics, sports.sports_team.championships, 1984 NBA Finals
2000 Summer Olympics, olympics.olympic_games.sports, Basketball
Boston Celtics, sports.sports_team.venue, m.0w_jqnb
Brad Stevens, sports.sports_team_coach.teams_coached, m.0w3_qv3
Boston Celtics, sports.sports_team.roster, m.0n4hr_g
Boston Celtics, sports.sports_team.roster, m.0_6y7kr
Boston Celtics, sports.sports_team.roster, m.0wp8ltr
Boston Celtics, sports.sports_team.championships, 1981 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0r62b6w
m.0crtdcs, sports.sports_league_participation.team, Boston Celtics
m.04_ngyw, sports.sports_league_draft_pick.team, Boston Celtics
Boston Celtics, sports.sports_team.championships, 1961 NBA Finals
1998 Winter Olympics, olympics.olympic_games.participating_countries, United States of America
m.0117cj90, sports.competitor_competition_relationship.country, United States of America
1936 Summer Olympics, olympics.olympic_games.participating_countries, United States of America
1896 Summer Olympics, olympics.olympic_games.participating_countries, United States of America
Boston Celtics, sports.sports_team.league, m.0crt3m_
1957 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0z3ztq1
Boston Celtics, sports.sports_team.roster, m.011y3d1_
United States of America, sports.sports_team_location.teams, United States men's national field hockey team
Boston Celtics, sports.sports_team.championships, 1963 NBA Finals
Boston Celtics, sports.professional_sports_team.owner_s, Wyc Grousbeck
Boston Celtics, sports.sports_team.coaches, m.0w3_qv3
Iowa St.-Kentucky 1992 NCAA Men's Division I Basketball Tournament Game, base.marchmadness.ncaa_basketball_tournament_game.tournament_round_instance, 1992 NCAA Men's Division I Basketball Tournament - East Regional Second Round
Wyc Grousbeck, common.topic.notable_for, g.12551qt4m
United States women's national field hockey team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.08tngmb
Boston Celtics, sports.sports_team.roster, m.0w7pb_7
Professional Sports Team, type.type.domain, Sports
Owner(s), type.property.reverse_property, Teams Owned
Basketball, olympics.olympic_sport.olympic_games_contested, 1936 Summer Olympics
Worcester, location.location.events, Massachusetts-Fordham 1992 NCAA Men's Division I Basketball Tournament Game
m.01149bgr, sports.competitor_competition_relationship.country, United States of America
United States national futsal team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0j2dtmd
Boston Celtics, sports.sports_team.roster, m.0ndtw33
Eastern Conference, sports.sports_league.teams, m.0crtdcs
United States of America, sports.sports_team_location.teams, United States Davis Cup team
Boston Celtics, sports.sports_team.championships, 1968 NBA Finals
Sports Team Owner, freebase.type_profile.strict_included_types, Topic
Sports Team Owner, freebase.type_profile.kind, Role
Sports, type.domain.types, Professional Sports Team
United States women's national basketball team, sports.sports_team.sport, Basketball
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 2
United States women's national gymnastics team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0w2s9yt
m.0wccc30, sports.sports_team_roster.team, Boston Celtics
Boston Celtics, sports.sports_team.league, m.0crtdcs
Owner(s), type.property.schema, Professional Sports Team
1992 Winter Olympics, olympics.olympic_games.participating_countries, United States of America
Worcester, location.location.events, Iowa St.-Kentucky 1992 NCAA Men's Division I Basketball Tournament Game
1984 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
United States men's national volleyball team, sports.sports_team.location, United States of America
Basketball, olympics.olympic_sport.olympic_games_contested, 1988 Summer Olympics
Worcester IceCats, sports.sports_team.location, Worcester
H. Irving Grousbeck, people.person.education, m.0n0jkj_
Boston Celtics, sports.sports_team.roster, m.0k5jgfm
H. Irving Grousbeck, people.person.nationality, United States of America
1986 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
m.0w7dhrf, sports.sports_team_roster.team, Boston Celtics
Worcester, location.location.events, Kentucky-Old Dominion 1992 NCAA Men's Division I Basketball Tournament Game
Owner(s), rdf-schema#domain, Professional Sports Team
H. Irving Grousbeck, people.person.education, m.0770ltc
m.06506pw, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
Professional Sports Team, type.type.properties, Owner(s)
Boston Celtics, sports.sports_team.colors, Green
1981 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
m.0crt3m_, sports.sports_league_participation.team, Boston Celtics
Team RadioShack, sports.sports_team.location, United States of America
m.011nrp4y, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, sports.sports_team.roster, m.0sgrygv
m.0wzp362, sports.competitor_competition_relationship.country, United States of America
United States of America, sports.sport_country.multi_event_tournaments_participated_in, 2012 World Mountain Running Championships
Boston Celtics, sports.sports_team.roster, m.0k2plv9
Boston Celtics, sports.sports_team.championships, 1960 NBA Finals
m.0b652wn, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, sports.sports_team.roster, m.0k2pqbc
Boston Celtics, sports.sports_team.location, Boston
Iowa St.-Kentucky 1992 NCAA Men's Division I Basketball Tournament Game, time.event.locations, Worcester
Boston Celtics, sports.sports_team.roster, m.0n4hsdz
United States of America, sports.sports_team_location.teams, United States national korfball team
m.0_qxftc, sports.sports_team_roster.team, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0wccc30
Boston Celtics, sports.sports_team.roster, m.0ztz0ph
Boston Celtics, sports.sports_team.roster, m.0j2dtm7
H. Irving Grousbeck, people.person.gender, Male
Boston Celtics, sports.sports_team.arena_stadium, XL Center
Boston Celtics, sports.sports_team.roster, m.0_4wx6j
m.08tngmb, sports.sports_team_roster.team, Boston Celtics
1965 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 6
Teams Owned, type.property.expected_type, Professional Sports Team
Male, sports.sports_gender.sports_teams, Vive Targi Kielce
1976 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
United States men's national basketball team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0j2dzwh
United States men's national basketball team, sports.tournament_event_competitor.country, m.0zdgbqg
Professional Sports Team, freebase.type_profile.strict_included_types, Topic
m.0b64_23, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, sports.sports_team.roster, m.0j2n1tp
United States men's national soccer team, sports.sports_team.location, United States of America
1960 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Professional Sports Team, freebase.type_hints.included_types, Topic
m.066nmg1, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
2012 World Mountain Running Championships, sports.multi_event_tournament.participating_countries, United States of America
Holy Cross Crusaders men's basketball, sports.sports_team.location, Worcester
United States of America, sports.sports_team_location.teams, United States women's national field hockey team
m.06p0bx8, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
Basketball, sports.sport.team_coaches, Brad Stevens
1964 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.coaches, m.0w1g5hx
Basketball, olympics.olympic_sport.olympic_games_contested, 2000 Summer Olympics
Boston Celtics, sports.sports_team.roster, m.0w7psvt
United States men's national field hockey team, sports.sports_team.location, United States of America
1991 Pan American Games, sports.multi_event_tournament.participating_countries, United States of America
Boston Celtics, sports.sports_team.roster, m.0pd51gh
m.051r766, sports.sports_team_roster.team, Boston Celtics
1936 Summer Olympics, olympics.olympic_games.sports, Basketball
1969 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1991 Pan American Games, sports.multi_event_tournament.competitors, m.0gyfrw1
United States of America, sports.sports_team_location.teams, United States national futsal team
Teams Owned, type.property.master_property, Owner(s)
Boston Celtics, sports.sports_team.roster, m.02396wx
Wyc Grousbeck, sports.professional_sports_team.owner_s, Boston Celtics
1992 NCAA Men's Division I Basketball Tournament, base.marchmadness.ncaa_basketball_tournament.stages, 1992 NCAA Men's Division I Basketball Tournament - East Regional Second Round
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 2
Boston Celtics, sports.sports_team.roster, m.0r5drlp
United States national badminton team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.championships, 1962 NBA Finals
m.0b6562w, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, sports.sports_team.roster, m.0n9gsbf
Boston Celtics, sports.sports_team.roster, m.0k2pdrr
United States national baseball team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.011w_f9t
Sports, type.domain.types, Sports Team Owner
Boston Celtics, sports.sports_team.roster, m.0k2_4y3
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 4
Boston Celtics, sports.sports_team.roster, m.0_th72d
m.0w3_qv3, sports.sports_team_coach_tenure.coach, Brad Stevens
m.02396wx, sports.sports_team_roster.team, Boston Celtics
United States national handball team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0z4403l
Boston Celtics, sports.sports_team.roster, m.0k8hkhn
1988 Summer Olympics, olympics.olympic_games.sports, Basketball
Wyc Grousbeck, people.person.education, m.04hp_p2
United States women's national ice hockey team, sports.sports_team.location, United States of America
Teams Owned, type.property.schema, Sports Team Owner
H. Irving Grousbeck, common.topic.article, m.04gjhl5
United States women's national rugby union team, sports.sports_team.location, United States of America
United States of America, sports.sports_team_location.teams, United States national speedway team
Sports Team Owner, freebase.type_profile.published, Published
Worcester, location.location.events, 1992 NCAA Men's Division I Basketball Tournament - East Regional Second Round
Syracuse-Princeton 1992 NCAA Men's Division I Basketball Tournament Game, time.event.locations, Worcester
Massachusetts-Fordham 1992 NCAA Men's Division I Basketball Tournament Game, time.event.locations, Worcester
United States national korfball team, sports.sports_team.location, United States of America
United States men's national basketball team, sports.sports_team.sport, Basketball
H. Irving Grousbeck, common.topic.notable_for, g.1258567mx
1988 Summer Olympics, olympics.olympic_games.participating_countries, United States of America
United States women's national basketball team, sports.sports_team.location, United States of America
Wyc Grousbeck, people.person.nationality, United States of America
United States national speedway team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0wb6zc8
United States women's national volleyball team, sports.sports_team.location, United States of America
United States of America, olympics.olympic_participating_country.olympics_participated_in, 1952 Summer Olympics
m.06dn7gb, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
m.011y3d1_, sports.sports_team_roster.team, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0j2dtm2
Boston Celtics, sports.sports_team.colors, Gold
1959 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 3
Worcester, location.location.events, 1992 NCAA Men's Division I Basketball Tournament - East Regional First Round
Boston Celtics, sports.sports_team.roster, m.0n4pnkt
1962 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
m.0_6y7kr, sports.sports_team_roster.team, Boston Celtics
m.0_r8s66, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, sports.sports_team.colors, White
Wyc Grousbeck, people.person.education, m.04hp_ny
Teams Owned, rdf-schema#domain, Sports Team Owner
Boston Celtics, sports.sports_team.roster, m.0j2dtly
Sports Team Owner, common.topic.article, m.06zx9lg
m.011vl4c_, sports.competitor_competition_relationship.country, United States of America
Professional Sports Team, type.type.expected_by, Teams Owned
Boston Celtics, sports.sports_team.championships, 1976 NBA Finals
United States of America, sports.sports_team_location.teams, United States National Men's Hockey Team
Boston Celtics, sports.sports_team.roster, m.0ztygd7
Boston Celtics, sports.sports_team.championships, 2008 NBA Finals
United States National Men's Hockey Team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0115xf8p
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 5
Boston Celtics, sports.sports_team.roster, m.0ztw1qz
m.0113ywh7, sports.sports_team_roster.team, Boston Celtics
United States of America, olympics.olympic_participating_country.olympics_participated_in, 1976 Winter Olympics
1961 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Charlotte-Iowa St. 1992 NCAA Men's Division I Basketball Tournament Game, time.event.locations, Worcester
Worcester, location.location.events, Charlotte-Iowa St. 1992 NCAA Men's Division I Basketball Tournament Game
Sports Team Owner, type.type.domain, Sports
1948 Winter Olympics, olympics.olympic_games.participating_countries, United States of America
Boston Celtics, sports.sports_team.roster, m.04mt_wf
Boston Celtics, sports.sports_team.roster, m.0j2h1r8
Wyc Grousbeck, common.topic.notable_types, Sports Team Owner
Holy Cross Crusaders football, sports.sports_team.colors, White
United States Davis Cup team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0110pz2r
Boston Celtics, sports.sports_team.roster, m.0z5k297
Worcester, location.location.events, Syracuse-Princeton 1992 NCAA Men's Division I Basketball Tournament Game
Boston Celtics, sports.sports_team.roster, m.011w_hdh
Boston Celtics, sports.sports_team.championships, 1965 NBA Finals
United States of America, sports.sports_team_location.teams, United States Equestrian Team
Owner(s), rdf-schema#range, Sports Team Owner
m.0b6598c, sports.competitor_competition_relationship.country, United States of America
m.0wjv1bf, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 3
Boston Celtics, sports.sports_team.roster, m.051r766
m.096hjmy, sports.competitor_competition_relationship.country, United States of America
XL Center, sports.sports_facility.teams, Boston Celtics
m.0w310mt, sports.sports_team_roster.team, Boston Celtics
m.0k2_4y3, sports.sports_team_roster.team, Boston Celtics
m.0ndtw33, sports.sports_team_roster.team, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0k8hcr4
Boston Celtics, sports.sports_team.sport, Basketball
Basketball, olympics.olympic_sport.olympic_games_contested, 1952 Summer Olympics
Boston Celtics, sports.sports_team.venue, m.0wz1_wj
Holy Cross Crusaders men's basketball, sports.sports_team.colors, White
Syracuse-Massachusetts 1992 NCAA Men's Division I Basketball Tournament Game, time.event.locations, Worcester
1968 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
United States women's national Australian rules football team, sports.sports_team.location, United States of America
Boston Celtics, sports.sports_team.roster, m.0113ywh7
Boston Celtics, sports.sports_team.roster, m.03h95d7
Worcester IceCats, sports.sports_team.arena_stadium, DCU Center
Wyc Grousbeck, people.person.education, m.0n1jlgw
Boston Celtics, sports.sports_team.roster, m.0pd51c6
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 6
1984 Winter Olympics, olympics.olympic_games.participating_countries, United States of America
Owner(s), owl#inverseOf, Teams Owned
Boston Celtics, sports.sports_team.championships, 1957 NBA Finals
Wyc Grousbeck, people.person.gender, Male
Worcester, location.location.events, Syracuse-Massachusetts 1992 NCAA Men's Division I Basketball Tournament Game
United States of America, sports.sports_team_location.teams, Team RadioShack
Boston Celtics, sports.sports_team.roster, m.011x6hjb
Massachusetts-Fordham 1992 NCAA Men's Division I Basketball Tournament Game, base.marchmadness.ncaa_basketball_tournament_game.tournament_round_instance, 1992 NCAA Men's Division I Basketball Tournament - East Regional First Round
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 1
Boston Celtics, sports.sports_team.roster, m.0k5y550
The London 2012 Summer Olympics, olympics.olympic_games.sports, Basketball
1966 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1952 Summer Olympics, olympics.olympic_games.participating_countries, United States of America
Boston Celtics, sports.sports_team.roster, m.01148mlh
1980 Winter Olympics, olympics.olympic_games.participating_countries, United States of America
United States national rugby union team, sports.sports_team.colors, White
Charlotte-Iowa St. 1992 NCAA Men's Division I Basketball Tournament Game, base.marchmadness.ncaa_basketball_tournament_game.tournament_round_instance, 1992 NCAA Men's Division I Basketball Tournament - East Regional First Round
m.06dn7lr, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
Boston Celtics, sports.sports_team.championships, 1966 NBA Finals
1976 Winter Olympics, olympics.olympic_games.participating_countries, United States of America
Boston Celtics, sports.sports_team.roster, m.0_qy714
Boston Celtics, sports.sports_team.roster, m.0113ztjw
United States national rugby union team, sports.sports_team.location, United States of America
m.06kkcsk, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
Worcester, location.location.events, 1992 NCAA Men's Division I Basketball Tournament
Boston Celtics, sports.sports_team.roster, m.0n9gs9q
Basketball, olympics.olympic_sport.olympic_games_contested, 1984 Summer Olympics
Boston Celtics, sports.sports_team.colors, Black
Boston Celtics, sports.sports_team.roster, m.0n4hs8t
Basketball, olympics.olympic_sport.olympic_games_contested, 2004 Summer Olympics
m.0svns44, sports.competitor_competition_relationship.country, United States of America
United States national American football team, sports.sports_team.location, United States of America
USA Women's World University Games Team, sports.sports_team.sport, Basketball
Boston Celtics, sports.sports_team.roster, m.0k8h69v
Boston Celtics, sports.sports_team.roster, m.0z4tlyt
m.0_qy714, sports.sports_team_roster.team, Boston Celtics
Boston Celtics, sports.sports_team.championships, 1986 NBA Finals
H. Irving Grousbeck, people.person.place_of_birth, United States of America
Boston Celtics, sports.sports_team.roster, m.0w310mt
Holy Cross Crusaders men's basketball, sports.sports_team.sport, Basketball
Boston Celtics, sports.sports_team.championships, 1974 NBA Finals
1984 Summer Olympics, olympics.olympic_games.sports, Basketball
United States of America, olympics.olympic_participating_country.olympics_participated_in, 1948 Winter Olympics
Sports Team Owner, freebase.type_hints.included_types, Topic
1992 NCAA Men's Division I Basketball Tournament, base.marchmadness.ncaa_basketball_tournament.stages, 1992 NCAA Men's Division I Basketball Tournament - East Regional First Round
Boston Celtics, sports.sports_team.roster, m.011y25qz
m.096hjm7, sports.competitor_competition_relationship.country, United States of America
m.0b64y35, sports.competitor_competition_relationship.country, United States of America
1952 Summer Olympics, olympics.olympic_games.sports, Basketball
H. Irving Grousbeck, people.person.children, Wyc Grousbeck
1963 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0k8hh28
Worcester, sports.sports_team_location.teams, Holy Cross Crusaders men's basketball
2004 Summer Olympics, olympics.olympic_games.sports, Basketball
Boston Celtics, sports.sports_team.roster, m.0r5ds1t
m.06dn7g4, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
Wyc Grousbeck, people.person.parents, H. Irving Grousbeck
Syracuse-Princeton 1992 NCAA Men's Division I Basketball Tournament Game, base.marchmadness.ncaa_basketball_tournament_game.tournament_round_instance, 1992 NCAA Men's Division I Basketball Tournament - East Regional First Round
Boston Celtics, sports.sports_team.roster, m.0r91kbr
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 7
Brad Stevens, sports.sports_team_coach.sports_coached, Basketball
Wyc Grousbeck, common.topic.article, m.0b7hk8
m.0n0jkj_, education.education.student, H. Irving Grousbeck
1988 Winter Olympics, olympics.olympic_games.participating_countries, United States of America
Boston Celtics, sports.sports_team.roster, m.0ztw1_3
m.0wz1_wj, sports.team_venue_relationship.venue, XL Center
Boston Celtics, sports.sports_team.roster, m.0w7qk0x
m.0b659c6, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, sports.sports_championship_event.champion, 1957 NBA Finals
Boston Celtics, sports.sports_team.championships, 1964 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0j2dths
H. Irving Grousbeck, common.topic.notable_types, Person
Boston Celtics, sports.sports_team.roster, m.0_qxftc
m.04mt_wf, sports.sports_team_roster.team, Boston Celtics
1984 Summer Olympics, olympics.olympic_games.participating_countries, United States of America
Syracuse-Massachusetts 1992 NCAA Men's Division I Basketball Tournament Game, base.marchmadness.ncaa_basketball_tournament_game.tournament_round_instance, 1992 NCAA Men's Division I Basketball Tournament - East Regional Second Round
m.0n1jlgw, education.education.student, Wyc Grousbeck
Boston Celtics, sports.sports_team.roster, m.0w7dhrf
Boston Celtics, sports.sports_team.roster, m.0fq7jy2
Boston Celtics, sports.sports_team.roster, m.0j2dtlm
Boston Celtics, sports.sports_team.roster, m.0zw_ktw
Wyc Grousbeck, sports.sports_team_owner.teams_owned, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0z3zm63
Teams Owned, rdf-schema#range, Professional Sports Team
m.0770ltc, education.education.student, H. Irving Grousbeck
m.0zdgbqg, sports.competitor_country_relationship.competitor, United States men's national basketball team
Boston Celtics, sports.sports_team.championships, 1969 NBA Finals
m.06dn7ly, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
Boston Celtics, sports.sports_team.roster, m.0j2qrz4
2008 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.professional_sports_team.draft_picks, m.04_ngyc
Boston Celtics, sports.sports_team.arena_stadium, TD Garden
Boston Celtics, sports.sports_team.roster, m.0qzlbgy
Boston Celtics, sports.sports_team.roster, m.0sxfyw9
m.01148mlh, sports.sports_team_roster.team, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0n60lgf
1992 NCAA Men's Division I Basketball Tournament, base.marchmadness.ncaa_basketball_tournament.gender, Male
USA Women's World University Games Team, sports.sports_team.location, United States of America
m.06kkcx7, base.athletics.athletics_championships_competition_athlete_relationship.country, United States of America
Boston Celtics, sports.sports_team.roster, m.02397wj
Sports Team Owner, type.type.properties, Teams Owned
m.04hp_ny, education.education.student, Wyc Grousbeck
United States of America, sports.sports_team_location.teams, United States national handball team
Boston Celtics, sports.sports_team.colors, Buff
Boston Celtics, sports.sports_team.roster, m.05yr4cz
Sports Team Owner, type.type.expected_by, Owner(s)
United States of America, sports.sport_country.multi_event_tournaments_participated_in, 1991 Pan American Games
Boston Celtics, sports.sports_team.roster, m.0_y32g5
Boston Celtics, sports.sports_team.roster, m.0j2dtls
Boston Celtics, sports.sports_team.roster, m.0z45_rs
m.0b64y39, sports.competitor_competition_relationship.country, United States of America
Wyc Grousbeck, people.person.place_of_birth, Worcester
m.04hp_p2, education.education.student, Wyc Grousbeck
Vive Targi Kielce, sports.sports_team.gender, Male
Boston Celtics, sports.sports_team.roster, m.0z46cvj
m.0gyfrw1, sports.competitor_country_relationship.tournament, 1991 Pan American Games
m.04_ngyc, sports.sports_league_draft_pick.team, Boston Celtics
United States Equestrian Team, sports.sports_team.location, United States of America
Owner(s), type.property.expected_type, Sports Team Owner
Boston Celtics, sports.sports_team.roster, m.0w7q4pg
Boston Celtics, sports.sports_team.roster, m.05hy04s
Boston Celtics, sports.sports_team.championships, 1959 NBA Finals
Boston Celtics, sports.sports_team.roster, m.05ssdk5
Boston Celtics, sports.sports_team.roster, m.0wb745r
United States of America, sports.sports_team_location.teams, United States national rugby union team
Basketball, olympics.olympic_sport.olympic_games_contested, The London 2012 Summer Olympics
1992 NCAA Men's Division I Basketball Tournament, time.event.locations, Worcester
Boston Celtics, sports.sports_team.roster, m.0zv066w
m.0b658lk, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, sports.sports_team.roster, m.0kjrh8t
1974 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
m.011vl49z, sports.competitor_competition_relationship.country, United States of America
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 5

Answer: 1957 NBA Finals