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: when did the celtics win championship? 
Knowledge Triplets: Boston Celtics, sports.sports_team.championships, 1959 NBA Finals
1981 NBA Finals, sports.sports_championship_event.runner_up, Houston Rockets
1976 NBA Finals Game 6, common.topic.notable_for, g.125f_zdr8
1969 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
Boston Celtics, sports.sports_team.roster, m.011y3d1_
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 5
1962 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
1984 NBA Finals, common.topic.article, m.08x9xz
1969 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.arena_stadium, TD Garden
1976 NBA Finals Game 1, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.location, Boston
1976 NBA Finals, sports.sports_championship_event.runner_up, Phoenix Suns
1981 NBA Finals Game 2, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.roster, m.0z46cvj
1984 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
m.0_qxt8j, award.award_honor.award_winner, Boston Celtics
Boston Celtics, sports.sports_team.championships, 2008 NBA Finals
Boston Celtics, basketball.basketball_team.division, Atlantic Division
1963 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
m.051r766, sports.sports_team_roster.team, Boston Celtics
The NBA Finals, sports.sports_championship.events, 1960 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0k6bgj5
Boston Celtics, sports.sports_team.roster, m.05ssdk5
1968–69 NBA season, sports.sports_league_season.championship, 1969 NBA Finals
1976 NBA Finals Game 5, common.topic.notable_for, g.125bldvww
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 6
1976 NBA Finals, common.topic.notable_types, Sports League Championship Event
Boston Celtics, sports.sports_team.championships, 1968 NBA Finals
1966 NBA Finals, sports.sports_championship_event.season, 1965–66 NBA season
1964 NBA Finals, common.topic.notable_types, Sports League Championship Event
1981 NBA Finals Game 4, common.topic.notable_types, TV Episode
1974 NBA Finals Game 4, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.roster, m.0ztz0ph
Boston Celtics, sports.sports_team.roster, m.0fq7jy2
Boston Celtics, sports.sports_team.roster, m.011y25qz
Boston Celtics, sports.sports_team.championships, 1962 NBA Finals
1969 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
1961 NBA Finals, sports.sports_championship_event.season, 1960–61 NBA season
Boston Celtics, tv.tv_subject.tv_programs, NBA Finals
Boston Celtics, sports.sports_team.roster, m.011x6hjb
Boston Celtics, sports.sports_team.roster, m.0k2plv9
1964 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1959 NBA Finals, common.topic.notable_types, Sports League Championship Event
1957 NBA Finals, common.topic.notable_for, g.125906rkn
1974 NBA Finals Game 7, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.roster, m.02396wx
Boston Celtics, award.award_winner.awards_won, m.0_qxt49
Boston Celtics, basketball.basketball_team.conference, Eastern Conference
The NBA Finals, sports.sports_championship.events, 1981 NBA Finals
Boston Celtics, award.award_nominee.award_nominations, m.0z43nms
1976 NBA Finals Game 3, common.topic.notable_types, TV Episode
1974 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
Boston Celtics, sports.sports_team.roster, m.0pd51gh
Boston Celtics, sports.sports_team.championships, 1963 NBA Finals
The NBA Finals, sports.sports_championship.events, 1962 NBA Finals
Boston Celtics, award.award_winner.awards_won, m.0_qwykr
1981 NBA Finals Game 3, common.topic.notable_types, TV Episode
1968 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
m.0_qwykr, award.award_honor.award_winner, Boston Celtics
1976 NBA Finals Game 4, common.topic.notable_types, TV Episode
1961 NBA Finals, common.topic.notable_for, g.125fg41zl
1981 NBA Finals Game 5, common.topic.notable_types, TV Episode
1960 NBA Finals, common.topic.article, m.0cs2hc
Boston Celtics, sports.sports_team.championships, 1981 NBA Finals
2008 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
Boston Celtics, sports.sports_team.roster, m.0w7q4pg
1960 NBA Finals, sports.sports_championship_event.season, 1959–60 NBA season
1974 NBA Finals, common.topic.article, m.0cs1gh
1963 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
Boston Celtics, sports.sports_team.roster, m.0z4tlyt
Boston Celtics, sports.sports_team.sport, Basketball
1981 NBA Finals, sports.sports_championship_event.season, 1980–81 NBA season
1969 NBA Finals, common.topic.notable_for, g.1259hmn9h
Boston Celtics, sports.sports_team.roster, m.0j2dtls
1974 NBA Finals Game 5, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.roster, m.0j2h1r8
Boston Celtics, sports.sports_championship_event.champion, 1957 NBA Finals
1966 NBA Finals, common.topic.notable_types, Sports League Championship Event
Boston Celtics, sports.sports_team.roster, m.01148mlh
Boston Celtics, sports.sports_team.roster, m.0j2dtlm
1965 NBA Finals, sports.sports_championship_event.season, 1964–65 NBA season
1962 NBA Finals, common.topic.notable_types, Sports League Championship Event
Boston Celtics, sports.sports_team.arena_stadium, XL Center
Boston Celtics, sports.sports_team.colors, Black
1974 NBA Finals Game 6, common.topic.notable_types, TV Episode
Boston Celtics, award.award_winner.awards_won, m.0_qwyjd
Boston Celtics, sports.sports_team.colors, Green
1961 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
1957 NBA Finals, sports.sports_championship_event.runner_up, St. Louis Hawks
Boston Celtics, sports.sports_championship_event.champion, 1976 NBA Finals
The NBA Finals, sports.sports_championship.events, 1963 NBA Finals
1965 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1974 NBA Finals, common.topic.notable_types, Sports League Championship Event
1960–61 NBA season, sports.sports_league_season.championship, 1961 NBA Finals
Boston Celtics, award.award_winner.awards_won, m.0_qrm59
Boston Celtics, award.award_winner.awards_won, m.0_qwx1_
Boston Celtics, sports.sports_team.roster, m.0wp8ltr
Boston Celtics, sports.sports_team.championships, 1969 NBA Finals
Boston Celtics, sports.sports_team.colors, Buff
1986 NBA Finals, sports.sports_championship_event.runner_up, Houston Rockets
Boston Celtics, sports.sports_team.roster, m.0w310mt
1976 NBA Finals Game 6, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.roster, m.051r766
Boston Celtics, sports.sports_team.roster, m.0j2dtm2
1965 NBA Finals, common.topic.notable_types, Sports League Championship Event
1959 NBA Finals, sports.sports_championship_event.season, 1958–59 NBA season
1959 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
Boston Celtics, sports.sports_team.league, m.0crtdcs
Connecticut Huskies men's basketball, sports.sports_team.championships, 1999 NCAA Men's Division I Basketball Tournament
1969 NBA Finals, sports.sports_championship_event.season, 1968–69 NBA season
Boston Celtics, sports.sports_team.championships, 1965 NBA Finals
1961 NBA Finals, sports.sports_championship_event.runner_up, St. Louis Hawks
Boston Celtics, sports.sports_team.roster, m.0w7dhrf
Boston Celtics, sports.sports_team.roster, m.0n60lxj
Boston Celtics, basketball.basketball_team.head_coach, Brad Stevens
Boston Celtics, sports.sports_championship_event.champion, 1960 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0z45_rs
1962 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1964–65 NBA season, sports.sports_league_season.league, National Basketball Association
1968 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1968 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
Boston Celtics, sports.sports_team.championships, 2008 NBA Finals
m.0_qxt49, award.award_honor.award_winner, Boston Celtics
Boston Celtics, award.award_nominee.award_nominations, m.0z43hm7
Boston Celtics, sports.sports_team.championships, 1964 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0z5k297
Boston Celtics, award.award_winner.awards_won, m.0_qwmq0
Boston Celtics, sports.sports_team.roster, m.0wb745r
Boston Celtics, sports.sports_team.roster, m.0113ztjw
Boston Celtics, sports.sports_team.roster, m.05hy04s
Boston Celtics, sports.sports_team.roster, m.0zv1l6n
Boston Celtics, sports.sports_team.roster, m.011w_f9t
Boston Celtics, sports.sports_team.roster, m.0115xf8p
Boston Celtics, sports.sports_team.coaches, m.0w3_qv3
1964 NBA Finals, common.topic.notable_for, g.1255kr8yz
Boston Celtics, award.award_nominee.award_nominations, m.0yx5c6w
m.0crtdcs, sports.sports_league_participation.team, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0113ywh7
Boston Celtics, sports.sports_team.roster, m.0_th72d
1980–81 NBA season, sports.sports_league_season.championship, 1981 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0k5jgfm
Boston Celtics, sports.sports_championship_event.champion, 1962 NBA Finals
Boston Celtics, sports.sports_team.championships, 1961 NBA Finals
1976 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
Boston Celtics, sports.sports_team.roster, m.0sxfyw9
The NBA Finals, sports.sports_championship.events, 1961 NBA Finals
1986 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
Boston Celtics, award.award_winner.awards_won, m.0_qwpgd
m.0_qrm59, award.award_honor.award_winner, Boston Celtics
1961–62 NBA season, sports.sports_league_season.championship, 1962 NBA Finals
Boston Celtics, sports.sports_team.coaches, m.0w1g5hx
Boston Celtics, sports.sports_team.championships, 1976 NBA Finals
Boston Celtics, sports.sports_championship_event.champion, 1981 NBA Finals
1957 NBA Finals, sports.sports_championship_event.season, 1956–57 NBA season
The NBA Finals, sports.sports_championship.events, 1986 NBA Finals
1981 NBA Finals Game 1, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.colors, White
Boston Celtics, sports.sports_team.roster, m.0k8hcr4
Atlantic Division, basketball.basketball_division.teams, Boston Celtics
1965–66 NBA season, sports.sports_league_season.championship, 1966 NBA Finals
1959 NBA Finals, common.topic.article, m.0cs2j1
Boston Celtics, award.award_winner.awards_won, m.0_qxqdw
m.0crt3m_, sports.sports_league_participation.team, Boston Celtics
1964 NBA Finals, sports.sports_championship_event.season, 1963–64 NBA season
1974 NBA Finals Game 6, common.topic.notable_for, g.12597kq1n
1963–64 NBA season, sports.sports_league_season.championship, 1964 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0zv066w
Boston Celtics, sports.sports_championship_event.champion, 1965 NBA Finals
Boston Celtics, sports.sports_team.roster, m.08tngmb
Boston Celtics, sports.sports_team.championships, 1966 NBA Finals
1964 NBA Finals, sports.sports_championship_event.runner_up, Golden State Warriors
Boston Celtics, sports.sports_team.roster, m.0w7qk0x
Boston Celtics, common.topic.webpage, m.04228m4
m.0_qwpgd, award.award_honor.award_winner, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0n4hsdz
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 6
The NBA Finals, sports.sports_championship.events, 1965 NBA Finals
m.0_qxt5p, award.award_honor.award_winner, Boston Celtics
1957 NBA Finals, common.topic.article, m.0cs2n5
Boston Celtics, common.topic.notable_types, Professional Sports Team
m.0z43hm7, award.award_nomination.award_nominee, Boston Celtics
1966 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
m.0z43nms, award.award_nomination.award_nominee, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0pd51c6
1962–63 NBA season, sports.sports_league_season.championship, 1963 NBA Finals
1985–86 NBA season, sports.sports_league_season.championship, 1986 NBA Finals
1962 NBA Finals, common.topic.article, m.0cs2f9
Boston Celtics, sports.sports_team.roster, m.0ndtw33
1966 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
Boston Celtics, sports.sports_team.championships, 1960 NBA Finals
m.0ghq5d9, tv.tv_guest_role.episodes_appeared_in, 1974 NBA Finals Game 1
m.0_qxqdw, award.award_honor.award_winner, Boston Celtics
The NBA Finals, sports.sports_championship.events, 1957 NBA Finals
1968 NBA Finals, sports.sports_championship_event.season, 1967–68 NBA season
1959 NBA Finals, common.topic.notable_for, g.125fgwwq2
Boston Celtics, sports.sports_team.league, m.0crt3m_
m.0_qwy6n, award.award_honor.award_winner, Boston Celtics
1974 NBA Finals, sports.sports_championship_event.runner_up, Milwaukee Bucks
1966 NBA Finals, common.topic.notable_for, g.125d40dx6
1984 NBA Finals, common.topic.notable_for, g.1257cf2pg
1984 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.colors, Gold
Boston Celtics, award.award_winner.awards_won, m.0_qwylx
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 7
1981 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
1969 NBA Finals, common.topic.article, m.08dxfy
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 2
Boston Celtics, award.award_winner.awards_won, m.0_qxt92
The NBA Finals, sports.sports_championship.events, 1976 NBA Finals
Boston Celtics, common.topic.article, m.0bwjv
1968 NBA Finals, common.topic.article, m.0cs227
1974 NBA Finals Game 2, common.topic.notable_types, TV Episode
1974 NBA Finals Game 1, common.topic.notable_types, TV Episode
1986 NBA Finals, sports.sports_championship_event.season, 1985–86 NBA season
1976 NBA Finals, sports.sports_championship_event.season, 1975–76 NBA season
1966 NBA Finals, common.topic.article, m.0cs24n
1959 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0w2s9yt
Boston Celtics, sports.sports_team.roster, m.03h95d7
1965 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
1976 NBA Finals Game 2, common.topic.notable_types, TV Episode
Boston Celtics, sports.sports_team.roster, m.0110pz2r
Boston Celtics, sports.sports_team.roster, m.0n4hs8t
m.0_qwyjd, award.award_honor.award_winner, Boston Celtics
1986 NBA Finals, common.topic.article, m.08x9wk
1963 NBA Finals, common.topic.notable_types, Sports League Championship Event
Boston Celtics, sports.sports_team.roster, m.0_y32g5
1976 NBA Finals Game 1, common.topic.notable_for, g.125gdmpjn
m.04228m4, common.webpage.topic, Boston Celtics
1976 NBA Finals Game 3, common.topic.notable_for, g.1256tdh4m
Boston Celtics, award.award_winner.awards_won, m.0z43nq2
1962 NBA Finals, common.topic.notable_for, g.12555pvt7
Boston Celtics, sports.sports_team.roster, m.0j2qrz4
m.0_qxtb9, award.award_honor.award_winner, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0k2_4y3
1969 NBA Finals, common.topic.notable_types, Sports League Championship Event
1962 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
Boston Celtics, sports.sports_team.roster, m.0w7pb_7
1974 NBA Finals Game 7, common.topic.notable_for, g.125fyjll5
1960 NBA Finals, sports.sports_championship_event.runner_up, St. Louis Hawks
The NBA Finals, sports.sports_championship.events, 1969 NBA Finals
1975–76 NBA season, sports.sports_league_season.championship, 1976 NBA Finals
1960 NBA Finals, common.topic.notable_types, Sports League Championship Event
1967–68 NBA season, sports.sports_league_season.championship, 1968 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0k8hh28
Boston Celtics, sports.sports_team.roster, m.0j2dths
Boston Celtics, award.award_winner.awards_won, m.0_qwy8c
1963 NBA Finals, common.topic.notable_for, g.1258cg_6y
1974 NBA Finals Game 3, common.topic.notable_types, TV Episode
1963 NBA Finals, sports.sports_championship_event.season, 1962–63 NBA season
1976 NBA Finals, common.topic.notable_for, g.125b1mypx
1965 NBA Finals, sports.sports_championship_event.runner_up, Los Angeles Lakers
1984 NBA Finals, sports.sports_championship_event.season, 1983–84 NBA season
1957 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1983–84 NBA season, sports.sports_league_season.championship, 1984 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0_6y7kr
Boston Celtics, sports.sports_team.roster, m.0r62b6w
1961 NBA Finals, common.topic.notable_types, Sports League Championship Event
1962 NBA Finals, sports.sports_championship_event.season, 1961–62 NBA season
Boston Celtics, sports.sports_team.roster, m.0w7psvt
Boston Celtics, sports.sports_team.roster, m.0ztygd7
The NBA Finals, sports.sports_championship.events, 1966 NBA Finals
1984 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 1
1984 NBA Finals, common.topic.notable_types, Sports League Championship Event
Boston Celtics, sports.sports_team.roster, m.0r5drlp
The NBA Finals, sports.sports_championship.events, 1959 NBA Finals
1981 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Bruins, sports.sports_team.championships, 2011 Stanley Cup Finals
Boston Celtics, sports.sports_team.championships, 1974 NBA Finals
Boston Celtics, sports.sports_team.roster, m.05yr4cz
Boston Celtics, sports.sports_team.roster, m.0r91kbr
1974 NBA Finals, sports.sports_championship_event.season, 1973–74 NBA season
1986 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1974 NBA Finals Game 2, common.topic.notable_for, g.1256f18pr
1968 NBA Finals, common.topic.notable_for, g.125fkyjb8
1959 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
NBA Finals, tv.tv_program.subjects, Boston Celtics
1965 NBA Finals, common.topic.notable_for, g.1255p7x69
Boston Celtics, sports.sports_team.roster, m.0j2dtm7
2008 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1963 NBA Finals, common.topic.article, m.0cs29h
1966 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
1976 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 2
m.0yx5c6w, award.award_nomination.award_nominee, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0k5y550
Boston Celtics, sports.sports_team.roster, m.0k8h69v
1976 NBA Finals Game 4, common.topic.notable_for, g.1256sbxwb
1961 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
2007–08 NBA season, sports.sports_league_season.championship, 2008 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0ztw1_3
1974 NBA Finals Game 5, common.topic.notable_for, g.1259g2rlk
Boston Celtics, award.award_winner.awards_won, m.0_qwy6n
1968 NBA Finals, common.topic.notable_types, Sports League Championship Event
m.0_qwmq0, award.award_honor.award_winner, Boston Celtics
Boston Celtics, tv.tv_subject.tv_episodes, 1974 NBA Finals Game 3
Boston Celtics, sports.sports_team.roster, m.0z3zm63
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 3
1974 NBA Finals Game 3, common.topic.notable_for, g.125gmt5bx
1981 NBA Finals, common.topic.article, m.08x9_0
Boston Celtics, sports.sports_team.roster, m.0kjrh8t
Boston Celtics, award.award_winner.awards_won, m.0_qxt_d
Boston Celtics, award.award_winner.awards_won, m.0_qxt5p
1976 NBA Finals Game 5, common.topic.notable_types, TV Episode
1964 NBA Finals, common.topic.article, m.0cs27r
Boston Celtics, sports.sports_team.roster, m.0j2dtmd
Boston Celtics, common.topic.notable_for, g.125dcb2tv
Boston Celtics, award.award_winner.awards_won, m.0_qwxb8
The NBA Finals, sports.sports_championship.events, 1964 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0sgrygv
Boston Celtics, sports.sports_team.roster, m.0k8hkhn
1964–65 NBA season, sports.sports_league_season.championship, 1965 NBA Finals
1957 NBA Finals, common.topic.notable_types, Sports League Championship Event
1981 NBA Finals, common.topic.notable_types, Sports League Championship Event
The NBA Finals, sports.sports_championship.events, 1968 NBA Finals
1974 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0j2n1tp
Boston Celtics, sports.sports_team.championships, 1986 NBA Finals
Eastern Conference, basketball.basketball_conference.teams, Boston Celtics
Boston Celtics, sports.sports_team.venue, m.0w_jqnb
1960 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
1963 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0r5ds1t
m.0_qwx1_, award.award_honor.award_winner, Boston Celtics
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 4
1976 NBA Finals Game 2, common.topic.notable_for, g.125cx_50l
m.0_qxt_d, award.award_honor.award_winner, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0_qy714
Boston Celtics, award.award_winner.awards_won, m.0_qxt8j
1986 NBA Finals, common.topic.notable_types, Sports League Championship Event
1981 NBA Finals, common.topic.notable_for, g.125fkyb2k
Boston Celtics, award.award_winner.awards_won, m.0_qxtb9
1974 NBA Finals, common.topic.notable_for, g.1254xjkz8
2008 NBA Finals, sports.sports_championship_event.season, 2007–08 NBA season
1960 NBA Finals, sports.sports_championship_event.champion, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0wccc30
Boston Celtics, sports.sports_team.championships, 1957 NBA Finals
Boston Celtics, sports.sports_team.roster, m.0wb6zc8
Boston Celtics, sports.sports_team.championships, 1984 NBA Finals
1964 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
Phoenix Suns, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 1
m.0_qwxb8, award.award_honor.award_winner, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0n9gsbf
Boston Celtics, sports.sports_team.roster, m.0j2dtly
Boston Celtics, sports.sports_team.championships, 1974 NBA Finals
1973–74 NBA season, sports.sports_league_season.championship, 1974 NBA Finals
1961 NBA Finals, common.topic.article, m.0cs2f_
1981 NBA Finals Game 6, common.topic.notable_types, TV Episode
The NBA Finals, sports.sports_championship.events, 1984 NBA Finals
1960 NBA Finals, common.topic.notable_for, g.1259ftml5
Boston Celtics, tv.tv_subject.tv_episodes, 1976 NBA Finals Game 5
1965 NBA Finals, common.topic.article, m.0cs26c
Boston Celtics, sports.sports_team.roster, m.0j2dzwh
Boston Celtics, sports.sports_team.roster, m.0n9gs9q
m.0_qxt92, award.award_honor.award_winner, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0z4403l
Boston Celtics, sports.sports_team.roster, m.0n4pnkt
1976 NBA Finals, common.topic.article, m.09l8zt
Boston Celtics, sports.sports_championship_event.champion, 1968 NBA Finals
Boston Celtics, sports.sports_team.roster, m.02397wj
1986 NBA Finals, common.topic.notable_for, g.12553j_24
The NBA Finals, sports.sports_championship.events, 1974 NBA Finals
m.0_qwylx, award.award_honor.award_winner, Boston Celtics
Boston Celtics, sports.sports_team.roster, m.0n60lgf
m.0z43nq2, award.award_honor.award_winner, Boston Celtics
1957 NBA Finals, sports.sports_championship_event.championship, The NBA Finals
Boston Celtics, sports.sports_championship_event.champion, 1963 NBA Finals
Boston Celtics, basketball.basketball_team.previous_coaches, m.0w2j6hy
m.0_qwy8c, award.award_honor.award_winner, Boston Celtics

Answer: 1968 NBA Finals
1976 NBA Finals
1963 NBA Finals
2008 NBA Finals
1962 NBA Finals
1960 NBA Finals
1965 NBA Finals
1957 NBA Finals
1981 NBA Finals
1974 NBA Finals
1959 NBA Finals
1966 NBA Finals
1986 NBA Finals
1984 NBA Finals
1964 NBA Finals
1969 NBA Finals
1961 NBA Finals