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 is the name of the pittsburgh steelers stadium? 
Knowledge Triplets: Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926rt
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.rushing, m.0792c2p
Pittsburgh Steelers, sports.sports_team.arena_stadium, Pitt Stadium
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792mj0
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48xs
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792czs
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792cz2
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rtv
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wmj
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.07926p8
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, common.topic.notable_for, g.1259v06hn
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.rushing, m.07t48vd
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.passing, m.0792d47
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.season, 2009 NFL season
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926v8
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792705
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rw6
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792mg8
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.rushing, m.07t48p1
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wl2
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926zd
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792mfr
Pittsburgh Steelers at Detroit Lions, 2009-10-11, common.topic.notable_for, g.1255c58_j
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.passing, m.0793j8b
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.rushing, m.0792md_
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.home_team, Cleveland Browns
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cxc
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, common.topic.notable_for, g.125ddf772
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.passing, m.0792b2l
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07929_s
Pittsburgh Steelers, sports.sports_facility.teams, Heinz Field
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48ws
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48yv
Pittsburgh Steelers, sports.sports_team.arena_stadium, Forbes Field
Pittsburgh Steelers at Arizona Cardinals, 2009-02-01, american_football.football_game.home_team, Arizona Cardinals
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.home_team, Cleveland Browns
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rw_
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792c_3
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0792b76
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.rushing, m.07t48pd
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.passing, m.0901qyg
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.passing, m.0793j8z
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.rushing, m.07mljx1
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.rushing, m.0793jbn
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793jcy
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b5r
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901rnd
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48sz
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.rushing, m.0792d4p
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48s8
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793jb5
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bm_
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.rushing, m.0792d5q
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.passing, m.07t48tz
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.rushing, m.0793q46
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792cyd
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wkr
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wlk
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48ql
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.passing, m.0792cwl
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.rushing, m.07922r2
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.passing, m.09g380w
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901r6p
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.home_team, Detroit Lions
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901rh5
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.passing, m.0792mcn
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901rkn
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.passing, m.07t48my
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, american_football.football_game.home_team, Baltimore Ravens
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901r01
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901r21
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.rushing, m.0792c1l
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793j9k
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48tk
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, common.topic.notable_for, g.125h3jddn
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792czf
Pittsburgh Steelers, sports.sports_team.arena_stadium, Three Rivers Stadium
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.home_team, Kansas City Chiefs
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48rm
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.rushing, m.0792md6
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901r5w
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901r0_
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wjp
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48qy
Pittsburgh Steelers at Denver Broncos, 2009-11-09, american_football.football_game.home_team, Denver Broncos
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bpn
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rc3
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rsm
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wjb
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48sm
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, common.topic.notable_for, g.125689xm8
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wp5
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.0792b04
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.rushing, m.07t48nq
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48r8
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.away_team, Pittsburgh Steelers
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901rjf
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901qzx
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901r3d
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901qzh
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0792cyr
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bp9
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.0792b0v
Pittsburgh Steelers at Miami Dolphins, 2010-01-03, common.topic.notable_for, g.1258wmy0m
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bnc
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.season, 2008 NFL season
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926wf
Pittsburgh Steelers, sports.sports_team.arena_stadium, Heinz Field
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.home_team, Jacksonville Jaguars
Pittsburgh Steelers at Washington Redskins, 2008-11-03, common.topic.notable_for, g.1259m4sn3
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.07926x7
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792b16
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.passing, m.0791whx
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.rushing, m.0901rg2
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, american_football.football_game.rushing, m.096qbn3
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wkd
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792mfc
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926qy
Pittsburgh Steelers at Chicago Bears, 2009-09-20, american_football.football_game.home_team, Chicago Bears
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.rushing, m.0792d50
Pittsburgh Steelers at Chicago Bears, 2009-09-20, common.topic.notable_for, g.1257z5jz7
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rrb
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.rushing, m.0792c1y
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.home_team, Philadelphia Eagles
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.home_team, New England Patriots
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cxq
Heinz Field, sports.sports_facility.teams, Pittsburgh Steelers
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b4v
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.passing, m.0901rdg
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48y3
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.rushing, m.0792bm5
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cx0
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bnz
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.passing, m.07922mc
Pittsburgh Steelers at Denver Broncos, 2009-11-09, common.topic.notable_for, g.12561994g
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901ryb
Pittsburgh Steelers at New England Patriots, 2008-11-30, common.topic.notable_for, g.125g473dj
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0791wk0
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0793jc3
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.rushing, m.0792d61
Pittsburgh Steelers at Cleveland Browns, 2009-12-10, american_football.football_game.rushing, m.09g384w
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, american_football.football_game.rushing, m.096qbnk
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.home_team, Baltimore Ravens
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.passing, m.0901rct
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.rushing, m.0792c31
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.passing, m.0792c0t
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.0792b0h
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.passing, m.0792bks
Pitt Stadium, sports.sports_facility.teams, Pittsburgh Steelers
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48pr
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.rushing, m.0792mdm
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rpw
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b3j
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.rushing, m.0792cy1
Pittsburgh Steelers at New England Patriots, 2008-11-30, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.rushing, m.0792bmk
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.rushing, m.0792blb
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.home_team, Washington Redskins
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.rushing, m.07t48vs
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48xf
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.passing, m.07926mr
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.passing, m.0792c0c
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.rushing, m.0792b3y
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, common.topic.notable_for, g.12558wqy_
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.0792mgs
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.rushing, m.0792c28
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.receiving, m.0792719
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901r8c
Pittsburgh Steelers at New England Patriots, 2008-11-30, american_football.football_game.receiving, m.0791wqh
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.rushing, m.07t48nc
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.season, 2009 NFL season
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, common.topic.notable_for, g.1256knc1q
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, common.topic.notable_for, g.125h5bpg8
Pittsburgh Steelers at Washington Redskins, 2008-11-03, american_football.football_game.rushing, m.0792c17
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.receiving, m.07t48yg
Pittsburgh Steelers at Cleveland Browns, 2008-09-14, american_football.football_game.rushing, m.07926tg
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.rushing, m.0792bls
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792bq0
Three Rivers Stadium, sports.sports_facility.teams, Pittsburgh Steelers
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.rushing, m.07922nh
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.rushing, m.0792d5c
Pittsburgh Steelers at Detroit Lions, 2009-10-11, common.topic.notable_types, NFL Game
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901rvd
Pittsburgh Steelers at Detroit Lions, 2009-10-11, american_football.football_game.rushing, m.07t48w3
Pittsburgh Steelers at Jacksonville Jaguars, 2008-10-05, american_football.football_game.receiving, m.0792mkk
Pittsburgh Steelers at Philadelphia Eagles, 2008-09-21, american_football.football_game.receiving, m.0792b6f
Pittsburgh Steelers at Kansas City Chiefs, 2009-11-22, american_football.football_game.receiving, m.0901r9s

Answer: Heinz Field