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: what years have the dallas cowboys won the superbowl? 
Knowledge Triplets: Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793cw7
The Story of the 2003 Dallas Cowboys: The Boys are Back, media_common.netflix_title.netflix_genres, Football
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn39
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn10
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.away_team, Dallas Cowboys
Dallas Cowboys at Pittsburgh Steelers, 2008-12-07, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.home_team, Arizona Cardinals
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jmzh
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793b7y
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at Arizona Cardinals, 2008-10-12
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.0793993
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.07939f1
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793cpp
The Story of the 2003 Dallas Cowboys: The Boys are Back, common.topic.notable_types, Film
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn2z
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.passing, m.0793b55
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn3n
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.passing, m.079397s
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.0794p8t
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.passing, m.09k0bgv
Dallas Cowboys, sports.sports_team.championships, Super Bowl XXVIII
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793mml
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793crs
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.home_team, New Orleans Saints
Super Bowl XXVII, sports.sports_championship_event.champion, Dallas Cowboys
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793bcr
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793b5t
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07939mw
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07953h6
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bd2
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.home_team, New York Giants
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at St. Louis Rams, 2008-10-19
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793qdl
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at New York Giants, 2008-11-02
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07939l3
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07953d6
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bkq
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.passing, m.07953c3
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07939p4
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.season, 2009 NFL season
Dallas Cowboys at Cleveland Browns, 2008-09-07, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.away_team, Dallas Cowboys
Super Bowl XXX, sports.sports_championship_event.champion, Dallas Cowboys
Dallas Cowboys at Denver Broncos, 2009-10-04, american_football.football_game.season, 2009 NFL season
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.away_team, Dallas Cowboys
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.passing, m.0793cn1
Dallas Cowboys, sports.sports_team.championships, Super Bowl XII
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at Pittsburgh Steelers, 2008-12-07
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793b72
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793mnm
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn1c
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793qf_
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jmzv
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793b9n
Dallas Cowboys at Washington Redskins, 2009-12-27, american_football.football_game.season, 2009 NFL season
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.season, 2009 NFL season
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793csh
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jmyt
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07953m2
Dallas Cowboys, american_football.football_team.home_games, San Francisco 49ers at Dallas Cowboys, 2008-11-23
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793qh6
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.0794p8g
Dallas Cowboys at Green Bay Packers, 2008-09-21, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bj9
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.passing, m.0793ml6
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793mpb
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793bc4
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.away_team, Dallas Cowboys
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bhz
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793bbm
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793qhs
Dallas Cowboys at New York Giants, 2008-11-02, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.07939fq
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793qjv
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.passing, m.09k0bb8
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793bb2
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn1q
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07953mf
Dallas Cowboys at Green Bay Packers, 2009-11-15, american_football.football_game.season, 2009 NFL season
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.07939bf
The Story of the 2003 Dallas Cowboys: The Boys are Back, media_common.netflix_title.netflix_genres, Sports & Fitness
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bc1
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at New York Giants, 2009-12-06
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bdf
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn2g
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.rushing, m.098jmyg
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at Washington Redskins, 2008-11-16
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793cr5
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.home_team, Washington Redskins
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at Cleveland Browns, 2008-09-07
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793qf8
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.079399l
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.0794pct
The Story of the 2003 Dallas Cowboys: The Boys are Back, film.film.personal_appearances, m.0jbcr5b
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.rushing, m.098jmxf
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.home_team, Philadelphia Eagles
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07939jl
Dallas Cowboys at Washington Redskins, 2008-11-16, common.topic.notable_types, NFL Game
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bg4
Dallas Cowboys, sports.sports_team.championships, Super Bowl VI
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793mls
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.passing, m.098jm_k
Dallas Cowboys at St. Louis Rams, 2008-10-19, common.topic.notable_for, g.1259mfyhh
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bgh
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793cp6
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.passing, m.07939hg
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793qfn
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bkb
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.rushing, m.098jmxs
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bld
Dallas Cowboys at New York Giants, 2008-11-02, american_football.football_game.passing, m.07939zl
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.0794pfn
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07939m2
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bfg
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07953l5
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at Philadelphia Eagles, 2008-12-28
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07939qc
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bm2
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793cnj
Dallas Cowboys at Denver Broncos, 2009-10-04, american_football.football_game.away_team, Dallas Cowboys
Dallas Cowboys, sports.sports_team.championships, Super Bowl XXVII
Dallas Cowboys, sports.sports_team.championships, Super Bowl XXVIII
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07939j3
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07953ct
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.07939b0
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07953dk
The Story of the 2003 Dallas Cowboys: The Boys are Back, common.topic.notable_for, g.1257wf_77
The Story of the 2003 Dallas Cowboys: The Boys are Back, film.film.runtime, m.0cs4k45
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07953g1
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793qd7
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bf3
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.rushing, m.098jmy3
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at Denver Broncos, 2009-10-04
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.passing, m.0793qcr
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bcr
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793cv8
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jm_5
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793cq6
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.passing, m.0793qby
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bbq
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.away_team, Dallas Cowboys
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bjn
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.07939d6
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.0794pg_
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.passing, m.0793cmc
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bds
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.rushing, m.098jn0p
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793qdy
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jn22
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07939j_
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07939nf
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07953j9
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bcd
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.passing, m.0794p6h
Dallas Cowboys at New York Giants, 2008-11-02, american_football.football_game.away_team, Dallas Cowboys
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.0794p82
Dallas Cowboys, sports.sports_team.championships, Super Bowl XXX
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793mn8
Dallas Cowboys, american_football.football_team.home_games, New York Giants at Dallas Cowboys, 2008-12-14
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793b92
Dallas Cowboys at Kansas City Chiefs, 2009-10-11, american_football.football_game.season, 2009 NFL season
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.079398p
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.0794p9j
Dallas Cowboys at Denver Broncos, 2009-10-04, american_football.football_game.home_team, Denver Broncos
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.receiving, m.07939pq
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at Philadelphia Eagles, 2009-11-08, american_football.football_game.season, 2009 NFL season
The Story of the 2003 Dallas Cowboys: The Boys are Back, media_common.netflix_title.netflix_genres, Football Non-fiction
Dallas Cowboys at St. Louis Rams, 2008-10-19, common.topic.notable_types, NFL Game
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bhm
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.0794pb5
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bft
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07939kf
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.rushing, m.0794p94
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.away_team, Dallas Cowboys
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.receiving, m.098jmz4
Dallas Cowboys at Tampa Bay Buccaneers, 2009-09-13, american_football.football_game.season, 2009 NFL season
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.rushing, m.07953f6
The Story of the 2003 Dallas Cowboys: The Boys are Back, film.film.subjects, Dallas Cowboys
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.07939gd
Super Bowl XXVIII, sports.sports_championship_event.champion, Dallas Cowboys
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bmf
The Story of the 2003 Dallas Cowboys: The Boys are Back, film.film.genre, Sports films
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793mqh
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.passing, m.098jmw_
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.0794pgd
Dallas Cowboys at New York Giants, 2009-12-06, american_football.football_game.rushing, m.098jn0b
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793mq2
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793mm7
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at Green Bay Packers, 2008-09-21
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.rushing, m.0793b69
The Story of the 2003 Dallas Cowboys: The Boys are Back, film.film.subjects, 2003 Dallas Cowboys season
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793cqq
Dallas Cowboys, sports.sports_team.championships, Super Bowl XXVII
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.rushing, m.0793mmy
Dallas Cowboys, american_football.football_team.away_games, Dallas Cowboys at New Orleans Saints, 2009-12-19
Dallas Cowboys at New York Giants, 2008-11-02, american_football.football_game.home_team, New York Giants
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.0794pdy
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.rushing, m.09k0bh8
Dallas Cowboys at St. Louis Rams, 2008-10-19, american_football.football_game.home_team, St. Louis Rams
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793qgp
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0blr
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.receiving, m.0793qgb
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bl1
Dallas Cowboys at Washington Redskins, 2008-11-16, american_football.football_game.season, 2008 NFL season
Dallas Cowboys at Arizona Cardinals, 2008-10-12, american_football.football_game.receiving, m.07939c3
Dallas Cowboys at New Orleans Saints, 2009-12-19, american_football.football_game.receiving, m.09k0bj_
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.receiving, m.0793ct8
Dallas Cowboys at Philadelphia Eagles, 2008-12-28, american_football.football_game.passing, m.0793clf

Answer: Super Bowl XXX
Super Bowl XXVII
Super Bowl XXVIII
Super Bowl VI
Super Bowl XII