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: who was the colts coach in 2011? 
Knowledge Triplets: New York Jets at Indianapolis Colts, 2010-01-24, common.topic.notable_for, g.125dzqgl6
m.0_3qy1c, sports.sports_team_coach_tenure.team, Indianapolis Colts
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.passing, m.07t4bhj
Indianapolis Colts, sports.sports_team_coach_tenure.team, m.0_3qy1c
Baltimore Colts, sports.professional_sports_team.owner_s, Carroll Rosenbloom
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvxl
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkx9
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b7j
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkxn
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.0792lgw
Baltimore Colts, sports.professional_sports_team.owner_s, Robert Irsay
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n7t
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.passing, m.09rdkvr
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.07937nz
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkzc
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdksp
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5kj
m.0j5cf47, american_football.football_historical_coach_position.team, Indianapolis Colts
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.passing, m.07ybvsq
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.passing, m.09tng98
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w98l
m.0_r23rd, american_football.football_historical_coach_position.coach, Bruce Arians
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mt3
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.passing, m.0901mzx
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4brh
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5rl
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.passing, m.07t4bp2
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5md
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkt0
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tng4g
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkz0
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.home_team, Indianapolis Colts
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkvd
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tnghn
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b4b
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5l_
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.passing, m.09tc5k1
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4bnr
Indianapolis Colts, american_football.football_team.home_games, Baltimore Ravens at Indianapolis Colts, 2010-01-16
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w931
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tng53
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkqz
Baltimore Ravens at Indianapolis Colts, 2010-01-16, common.topic.notable_types, NFL Game
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tngc5
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w99m
American football, sports.sport.team_coaches, Jim Caldwell
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.passing, m.09tng19
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkyp
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w975
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkyb
Baltimore Colts, american_football.football_team.historical_coaching_staff, m.0_r0s4g
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901mkg
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tngfq
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5tb
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w998
Robert Irsay, sports.sports_team_owner.teams_owned, Indianapolis Colts
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5qs
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkx_
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w92q
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4bl4
Jim Caldwell, sports.sports_team_coach.teams_coached, m.0_3qy1c
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w96h
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkwm
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4bm2
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5ry
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.0792lg3
Indianapolis Colts, sports.sports_team.coaches, m.0_3qy1c
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tng6l
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.away_team, Indianapolis Colts
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5s9
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.passing, m.0792l9p
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.passing, m.0b3w91l
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901mmm
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tngb0
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.passing, m.07t4bh_
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w940
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5nv
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.07937r6
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvsc
m.0_r1d7m, american_football.football_historical_coach_position.team, Baltimore Colts
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvwx
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w951
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w9bn
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5qd
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.away_team, Indianapolis Colts
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.passing, m.0901mfp
Chuck Pagano, american_football.football_coach.current_team_head_coached, Indianapolis Colts
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w93j
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5ln
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tng2t
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5q0
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mq4
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4bsn
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4blh
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tng3y
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w96v
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvs0
Jim Caldwell, people.person.profession, Coach
Indianapolis Colts, american_football.football_historical_coach_position.team, m.0j5cf47
Jim Caldwell, sports.sports_team_coach.sports_coached, American football
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tngct
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5n2
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901nc2
Indianapolis Colts, american_football.football_team.historical_coaching_staff, m.0_r23rd
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.season, 2009 NFL season
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdktc
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4bn1
New Orleans Saints at Indianapolis Colts, 2010-02-07, common.topic.notable_for, g.125czpqhw
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.passing, m.07937jt
American football, sports.sports_team_coach.sports_coached, Jim Caldwell
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5kw
Lindy Infante, american_football.football_coach.coaching_history, m.0_q_pw7
m.0_3qy1c, sports.sports_team_coach_tenure.coach, Jim Caldwell
Indianapolis Colts, american_football.football_team.historical_coaching_staff, m.0_q_pw7
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w9b9
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mp0
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w98y
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w92c
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tng7b
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5mr
Indianapolis Colts, sports.sports_team.sport, American football
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.0792lhn
m.0_r23rd, american_football.football_historical_coach_position.team, Indianapolis Colts
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tng3c
m.0_r0s4g, american_football.football_historical_coach_position.team, Baltimore Colts
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5s_
Indianapolis Colts, sports.professional_sports_team.owner_s, Robert Irsay
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.passing, m.0b3w95r
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w94d
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901myp
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.rushing, m.0792lb8
Indianapolis Colts, american_football.football_team.historical_coaching_staff, m.0j5cf47
Robert Irsay, sports.sports_team_owner.teams_owned, Baltimore Colts
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w987
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mv3
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w97j
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvvw
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n55
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.passing, m.09tc5pk
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901n3x
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkwz
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tngdg
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mwt
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.season, 2009 NFL season
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkzq
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tngbn
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4brz
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.passing, m.07ybvp5
Detroit Lions, american_football.football_team.current_head_coach, Jim Caldwell
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.home_team, Buffalo Bills
Jim Caldwell, american_football.football_coach.coaching_history, m.0j5cf47
Indianapolis Colts at Buffalo Bills, 2010-01-03, common.topic.notable_for, g.12567wkgj
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w95d
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mr6
m.0j5cf47, american_football.football_historical_coach_position.coach, Jim Caldwell
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkq8
Baltimore Colts, american_football.football_team.historical_coaching_staff, m.0_r1d7m
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w920
m.0j5cf47, american_football.football_historical_coach_position.coach, Jim Caldwell
Indianapolis Colts, american_football.football_team.current_head_coach, Chuck Pagano
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.rushing, m.09tng25
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.0792ljl
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvxy
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5l7
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901mj8
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.away_team, Baltimore Ravens
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkr9
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.0792ldy
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkrn
m.0_q_pw7, american_football.football_historical_coach_position.coach, Lindy Infante
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvvj
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.0792lj6
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901msc
Baltimore Ravens at Indianapolis Colts, 2010-01-16, common.topic.notable_for, g.1255525gq
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.passing, m.09rdkpv
Indianapolis Colts, american_football.football_team.home_games, New York Jets at Indianapolis Colts, 2010-01-24
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.rushing, m.0b3w97x
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5r3
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.receiving, m.07937s2
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.passing, m.09rdkw5
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.home_team, Indianapolis Colts
Bruce Arians, american_football.football_coach.coaching_history, m.0_r23rd
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4bnd
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.passing, m.09tng7x
Indianapolis Colts at Tennessee Titans, 2009-10-11, american_football.football_game.receiving, m.07t4bkt
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.passing, m.09k0b1h
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901nb5
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5p5
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n6p
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tngf4
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tng5r
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n5_
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tnggb
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdktq
m.0_q_pw7, american_football.football_historical_coach_position.team, Indianapolis Colts
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvw6
m.0_3qy1c, sports.sports_team_coach.teams_coached, Jim Caldwell
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvwk
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.away_team, New York Jets
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.rushing, m.09rdkqm
Indianapolis Colts, american_football.football_team.home_games, New Orleans Saints at Indianapolis Colts, 2010-02-07
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5nf
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkv1
Indianapolis Colts, sports.professional_sports_team.owner_s, Jim Irsay
Indianapolis Colts, american_football.football_team.away_games, Indianapolis Colts at Buffalo Bills, 2010-01-03
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.receiving, m.0b3w99z
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.receiving, m.09tngh0
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5sn
New York Jets at Indianapolis Colts, 2010-01-24, american_football.football_game.home_team, Indianapolis Colts
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdksb
Jim Irsay, sports.sports_team_owner.teams_owned, Indianapolis Colts
Jim Caldwell, american_football.football_coach.current_team_head_coached, Detroit Lions
Indianapolis Colts at Buffalo Bills, 2010-01-03, american_football.football_game.receiving, m.09rdkr_
Chuck Pagano, people.person.profession, Coach
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5tp
New Orleans Saints at Indianapolis Colts, 2010-02-07, american_football.football_game.away_team, New Orleans Saints
Indianapolis Colts at San Diego Chargers, 2009-01-03, american_football.football_game.rushing, m.0792lbr

Answer: Jim Caldwell