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 is the head coach of the indianapolis colts? 
Knowledge Triplets: Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b4b
Indianapolis Colts, sports.sports_team.sport, American football
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901mmm
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.season, 2008 NFL season
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.rushing, m.07ybvt4
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792cbp
m.09w8wmx, common.webpage.topic, Indianapolis Colts
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrjv
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.079294y
Indianapolis Colts, american_football.football_team.away_games, Indianapolis Colts at Pittsburgh Steelers, 2008-11-09
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792pwm
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792pw_
m.09xtjx4, common.webpage.topic, Indianapolis Colts
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mp0
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901mkg
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.079296d
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n7t
Jim Irsay, sports.sports_team_owner.teams_owned, Indianapolis Colts
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc1b
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901mj8
Jim Caldwell, american_football.football_coach.current_team_head_coached, Detroit Lions
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792kg2
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvwx
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792kdq
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.079291p
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc5g
m.0j5cf47, american_football.football_historical_coach_position.coach, Jim Caldwell
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.home_team, Cleveland Browns
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.passing, m.07ybvp5
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.0792kck
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792cf_
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792kxb
Jim Caldwell, people.person.profession, Coach
Indianapolis Colts, american_football.football_team.current_head_coach, Chuck Pagano
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792kcz
Indianapolis Colts, american_football.football_team.away_games, Indianapolis Colts at Baltimore Ravens, 2009-11-22
m.09w946v, common.webpage.topic, Indianapolis Colts
Indianapolis Colts, american_football.football_team.historical_coaching_staff, m.0_q_pw7
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.079293v
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.079294k
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrjg
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792k1w
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901nc2
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b8k
Detroit Lions, american_football.football_team.current_head_coach, Jim Caldwell
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b5c
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.away_team, Indianapolis Colts
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b39
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrkj
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.rushing, m.0792jyn
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc6h
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792960
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b9l
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.passing, m.0901mzx
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792cfh
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.season, 2009 NFL season
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.season, 2008 NFL season
Indianapolis Colts, common.topic.webpage, m.0422cyh
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.passing, m.0792pqz
m.0_3qy1c, sports.sports_team_coach_tenure.team, Indianapolis Colts
Indianapolis Colts, common.topic.article, m.03wnt
Indianapolis Colts, common.topic.notable_for, g.1257p9t50
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.rushing, m.0792jy7
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b86
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792pth
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b50
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792ccc
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792c9z
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792pxt
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc0h
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc5t
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mr6
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b2z
New England Patriots at Indianapolis Colts, 2008-11-02, american_football.football_game.receiving, m.0791vyr
Indianapolis Colts, sports.professional_sports_team.owner_s, Robert Irsay
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.passing, m.0792c7j
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.0792919
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrkw
New England Patriots at Indianapolis Colts, 2008-11-02, american_football.football_game.receiving, m.0791w06
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.passing, m.09k0b1h
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvvj
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrl6
Indianapolis Colts, common.topic.webpage, m.09w8bgk
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792kxv
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.0792kc6
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.0792jgc
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792py6
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792kfd
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.passing, m.0901mfp
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.away_team, Indianapolis Colts
Indianapolis Colts, american_football.football_team.conference, American Football Conference
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b97
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, common.topic.notable_for, g.1256brqk1
Indianapolis Colts at Cleveland Browns, 2008-11-30, common.topic.notable_for, g.1256lcvy3
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.season, 2009 NFL season
Chuck Pagano, american_football.football_coach.current_team_head_coached, Indianapolis Colts
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792k09
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvs0
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n5_
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.rushing, m.07ybvpz
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mt3
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.0792jjq
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvxl
m.0j5cf47, american_football.football_historical_coach_position.team, Indianapolis Colts
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.passing, m.09k0b5q
m.0_q_pw7, american_football.football_historical_coach_position.team, Indianapolis Colts
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.0792jh5
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792kzp
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.rushing, m.0792c9l
m.0b471r5, common.webpage.topic, Indianapolis Colts
Indianapolis Colts, american_football.football_team.away_games, Indianapolis Colts at Cleveland Browns, 2008-11-30
m.09w9k_f, common.webpage.topic, Indianapolis Colts
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc51
m.0422cyh, common.webpage.topic, Indianapolis Colts
Chuck Pagano, people.person.profession, Coach
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.0792kbv
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792kf1
Indianapolis Colts, common.topic.notable_types, American football team
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901msc
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.0792921
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc75
Indianapolis Colts, american_football.football_team.historical_coaching_staff, m.0_r23rd
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvrb
Indianapolis Colts at Miami Dolphins, 2009-09-21, american_football.football_game.receiving, m.07mllbg
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792jy_
Indianapolis Colts at Baltimore Ravens, 2009-11-22, common.topic.notable_for, g.1256xshrj
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792kfr
Indianapolis Colts, common.topic.webpage, m.0b471r5
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.season, 2009 NFL season
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b7w
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901n1h
Indianapolis Colts, sports.professional_sports_team.owner_s, Jim Irsay
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792j_g
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.rushing, m.07ybvth
Indianapolis Colts, sports.sports_team.coaches, m.0_3qy1c
m.0_3qy1c, sports.sports_team_coach_tenure.coach, Jim Caldwell
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n55
Indianapolis Colts, american_football.football_coach.current_team_head_coached, Chuck Pagano
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b4p
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901mlp
m.0_r0s4g, american_football.football_historical_coach_position.team, Baltimore Colts
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792cdx
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvw6
Indianapolis Colts, american_football.football_team.home_games, New England Patriots at Indianapolis Colts, 2008-11-02
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.passing, m.079290v
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b8x
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901nb5
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.passing, m.0792jck
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.079295n
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.passing, m.07ybvsq
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.passing, m.075rrg8
m.09w8bgk, common.webpage.topic, Indianapolis Colts
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvrp
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvxy
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792kyr
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.079293g
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792kdb
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.rushing, m.0792c8r
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.rushing, m.07ybvpm
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.home_team, St. Louis Rams
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.home_team, Pittsburgh Steelers
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.0792jgs
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mq4
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.passing, m.0792kbd
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.079292d
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792958
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792pxd
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792k15
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.passing, m.0792jxs
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b7j
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrk5
m.0_r23rd, american_football.football_historical_coach_position.coach, Bruce Arians
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.passing, m.0792ktv
Indianapolis Colts, american_football.football_team.historical_coaching_staff, m.0j5cf47
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792cd8
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.passing, m.079290d
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvq_
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvwk
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.0792jj2
New England Patriots at Indianapolis Colts, 2009-11-15, american_football.football_game.receiving, m.08nlc25
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mv3
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.rushing, m.0792c95
m.0_r23rd, american_football.football_historical_coach_position.team, Indianapolis Colts
Indianapolis Colts, sports.sports_team.previously_known_as, Baltimore Colts
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrj3
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b9y
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792k_q
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvvw
Indianapolis Colts at Green Bay Packers, 2008-10-19, american_football.football_game.receiving, m.075rrhs
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvx7
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.0792932
Indianapolis Colts, common.topic.webpage, m.09xtjx4
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b3n
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901mwt
Robert Irsay, sports.sports_team_owner.teams_owned, Indianapolis Colts
New England Patriots at Indianapolis Colts, 2008-11-02, american_football.football_game.receiving, m.0792jrl
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.receiving, m.0792945
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.rushing, m.09k0b6h
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792jzp
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.rushing, m.0901n3x
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvqn
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901myp
Indianapolis Colts at Jacksonville Jaguars, 2008-12-18, american_football.football_game.receiving, m.0792pvy
Indianapolis Colts, common.topic.webpage, m.09w8wmx
Indianapolis Colts at Cleveland Browns, 2008-11-30, american_football.football_game.rushing, m.079292r
Indianapolis Colts, american_football.football_team.away_games, Indianapolis Colts at Minnesota Vikings, 2008-09-14
Indianapolis Colts, american_football.football_team.division, AFC South
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.rushing, m.07ybvv5
Indianapolis Colts at Jacksonville Jaguars, 2009-12-17, american_football.football_game.receiving, m.09k0b3_
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.receiving, m.07ybvsc
Indianapolis Colts, common.topic.webpage, m.09w946v
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.receiving, m.0901n6p
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.rushing, m.07ybvq9
Indianapolis Colts, american_football.football_team.away_games, Indianapolis Colts at St. Louis Rams, 2009-10-25
Indianapolis Colts, american_football.football_team.home_games, New England Patriots at Indianapolis Colts, 2009-11-15
Indianapolis Colts, common.topic.webpage, m.09w9k_f
Indianapolis Colts at St. Louis Rams, 2009-10-25, american_football.football_game.away_team, Indianapolis Colts
Indianapolis Colts at Pittsburgh Steelers, 2008-11-09, american_football.football_game.receiving, m.0792k1j

Answer: Chuck Pagano