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: In which year, did the Steelers win the Super Bowl, the latest occasion? 
Knowledge Triplets: Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.home_team, Chicago Bears
2011 AFC Championship Game, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793jb5
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wlk
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0792dz_
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792b16
Pittsburgh Steelers, sports.sports_team.championships, Super Bowl X
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926x7
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794tb2
Pittsburgh Steelers at Denver Broncos, 2009-11-09, american_football.football_game.season, 2009 NFL season
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.season, 2009 NFL season
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.receiving, m.09g3842
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f11
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0793jdz
Pittsburgh Steelers, sports.sports_team.championships, 2011 AFC Championship Game
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0794t9d
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f2f
Pittsburgh Steelers, sports.sports_team.championships, Super Bowl XIV
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.away_team, Pittsburgh Steelers
1995 AFC Championship Game, sports.sports_championship_event.runner_up, Pittsburgh Steelers
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f1r
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cxc
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.0792b0v
Pittsburgh Steelers at Denver Broncos, 2009-11-09, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0793jhk
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0793jh1
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793j9k
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792czs
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlk7h
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07929_s
1996 AFC Championship Game, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792b1z
Pittsburgh Steelers at New England Patriots, 2008-11-30, common.topic.notable_for, g.125g473dj
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rsm
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0792d_p
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794tgx
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.passing, m.07929_b
Pittsburgh Steelers, sports.sports_team.championships, Super Bowl XIII
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.passing, m.0792bks
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.passing, m.0792b2l
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794tbh
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926tg
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, common.topic.notable_types, NFL Game
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792cz2
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.receiving, m.0792db5
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.receiving, m.09g385x
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926wf
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mljz8
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.passing, m.07926mr
Pittsburgh Steelers, sports.sports_team.championships, 1996 AFC Championship Game
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.passing, m.0791whx
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792719
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f22
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.passing, m.0792cwl
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0793jgj
2006 AFC Championship Game, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at Cincinnati Bengals, 2008-10-19, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b3y
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, common.topic.notable_for, g.125h5bpg8
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, american_football.football_game.season, 2009 NFL season
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.receiving, m.09g383d
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlk8y
Pittsburgh Steelers at New England Patriots, 2008-11-30, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.rushing, m.07mljxh
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.passing, m.07mljwd
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f0q
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wjp
1998 AFC Championship Game, sports.sports_championship_event.runner_up, Pittsburgh Steelers
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0792d_b
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlkcm
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rrb
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wqh
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926v8
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.rushing, m.07mljyd
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlj_v
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792705
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bnc
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0794t8t
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b5r
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wqx
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792mkk
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.receiving, m.0792t19
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wkd
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.passing, m.07922mc
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlkc8
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.season, 2009 NFL season
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.passing, m.09g380w
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wl2
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.home_team, New England Patriots
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794td2
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793jbn
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlj_1
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.passing, m.0901rct
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b4v
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wmj
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792cyr
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793jc3
Pittsburgh Steelers, sports.sports_team.championships, Super Bowl XLIII
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0792b7z
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.home_team, Arizona Cardinals
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926qy
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794tj1
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0793jfz
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.passing, m.0792d47
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.receiving, m.09g387t
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.passing, m.0792dz6
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rvd
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0794t7r
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792czf
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlk0j
Pittsburgh Steelers, sports.sports_team.championships, 2009 AFC Championship Game
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.away_team, Pittsburgh Steelers
Super Bowl XIV, sports.sports_championship_event.champion, Pittsburgh Steelers
Super Bowl XLIII, sports.sports_championship_event.champion, Pittsburgh Steelers
Super Bowl XIII, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cxq
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.passing, m.0792c0t
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wk0
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0794t8c
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.receiving, m.09g383r
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926_4
2002 AFC Championship Game, sports.sports_championship_event.runner_up, Pittsburgh Steelers
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0792b9b
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.passing, m.0793q3j
Pittsburgh Steelers, sports.sports_team.championships, Super Bowl XL
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0793jdk
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794tf1
Pittsburgh Steelers, sports.sports_team.championships, Super Bowl IX
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792c_3
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.passing, m.0792c0c
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bnz
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wjb
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.receiving, m.09g387g
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.passing, m.0792b30
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.0792b0h
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlk6_
Pittsburgh Steelers, sports.sports_championship_event.champion, 2011 AFC Championship Game
Super Bowl X, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794tg6
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.passing, m.0792mcn
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.passing, m.0792d8q
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wp5
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793jcy
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wkr
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, common.topic.notable_types, NFL Game
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792cyd
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mljzp
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.passing, m.0793j8z
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b3j
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.home_team, Philadelphia Eagles
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901r3d
2009 AFC Championship Game, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f00
Super Bowl XL, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792b1l
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.0792b04
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0794tc0
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cy1
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.passing, m.09g384f
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0792b8n
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.passing, m.0794t6r
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926rt
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926zd
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.rushing, m.0792dzn
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0793jfg
Super Bowl IX, sports.sports_championship_event.champion, Pittsburgh Steelers
Pittsburgh Steelers at Chicago Bears, 2009-09-20, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.passing, m.0901qyg
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlk15
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.receiving, m.0792t22
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.passing, m.0792t03
Pittsburgh Steelers, sports.sports_team.championships, 2006 AFC Championship Game
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926ym
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.passing, m.0901rdg
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f0c
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cx0
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0792b76
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlk2x
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlk87
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0792b6f
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792mfr
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.passing, m.0793j8b
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.passing, m.07mlk3t
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlkcz
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.season, 2009 NFL season
Pittsburgh Steelers at Denver Broncos, 2009-11-09, american_football.football_game.passing, m.088x37t
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.receiving, m.07mlkbq
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.home_team, Cleveland Browns
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.receiving, m.0792f1d

Answer: 2011 AFC Championship Game