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 coached the Minnesota Vikings from 2006? 
Knowledge Triplets: Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cmf
Minnesota Vikings, american_football.football_team.conference, National Football Conference
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.home_team, Chicago Bears
m.04xgyv2, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.07940cr
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.passing, m.0794cfg
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.0794rnb
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.079421h
m.04xgytq, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Cleveland Browns, 2009-09-13, american_football.football_game.receiving, m.07jqfjk
Minnesota Vikings at Jacksonville Jaguars, 2008-11-23, american_football.football_game.receiving, m.0792nzd
m.0_5dxtm, sports.sports_team_coach_tenure.team, Minnesota Vikings
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.0794rhb
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.0794rm_
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794123
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l2k
m.04xgytv, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.07940wz
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.season, 2008 NFL season
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.07940yq
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.07941nd
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0794cjk
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0794cgr
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk3w
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.home_team, Chicago Bears
m.0ztjbtf, sports.sports_team_coach_tenure.team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.away_team, New York Giants
m.0_5dx9_, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings, sports.sports_team.coaches, m.0_msn3k
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.away_team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.passing, m.0793h5_
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0793_v_
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.home_team, Tampa Bay Buccaneers
Minnesota Vikings at Jacksonville Jaguars, 2008-11-23, american_football.football_game.home_team, Jacksonville Jaguars
m.0vsc3l2, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.0794211
Minnesota Vikings, american_football.football_team.home_games, Carolina Panthers at Minnesota Vikings, 2008-09-21
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z5p
Minnesota Vikings, sports.sports_team_coach_tenure.team, m.0ztjbtf
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z6g
Minnesota Vikings, american_football.football_team.away_games, Minnesota Vikings at New Orleans Saints, 2008-10-06
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.07942gh
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.home_team, Arizona Cardinals
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l5y
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.079420l
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.07942k6
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.0794kzl
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk2h
m.04xgytb, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.passing, m.07941m1
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_zl
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.0794k_9
Minnesota Vikings at Tennessee Titans, 2008-09-28, american_football.football_game.home_team, Tennessee Titans
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z53
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.079410p
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.079411n
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.passing, m.0793_s7
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z7x
Minnesota Vikings, sports.sports_team.coaches, m.0ztjbtf
m.04xgytz, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.07940db
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.passing, m.07940vb
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.passing, m.0793z1t
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytg
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0793tg2
Minnesota Vikings at Detroit Lions, 2009-09-20, american_football.football_game.receiving, m.07mlfnr
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_z4
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793__3
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.rushing, m.0793tbq
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.0793hb4
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_wk
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytl
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z7d
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0793_tm
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794117
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.07940_9
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk3j
m.0ztjbtf, sports.sports_team_coach.teams_coached, Leslie Frazier
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0794chb
Minnesota Vikings, sports.sports_team.sport, American football
m.05cvv0z, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knjzm
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l5l
Minnesota Vikings at Cleveland Browns, 2009-09-13, american_football.football_game.home_team, Cleveland Browns
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.07940bp
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0793tgt
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z61
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cp9
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.passing, m.0794kxz
Minnesota Vikings at Pittsburgh Steelers, 2009-10-25, american_football.football_game.passing, m.07ybvhy
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.away_team, Minnesota Vikings
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.home_team, Detroit Lions
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.away_team, Minnesota Vikings
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l57
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.passing, m.07940vx
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cls
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.07941tq
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.07940xq
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.passing, m.0793h5g
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0793tf0
American football, sports.sport.team_coaches, Leslie Frazier
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cq3
Minnesota Vikings, american_football.football_historical_coach_position.team, m.0vsc3l2
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.season, 2008 NFL season
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.0794l05
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.0793z3m
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgyv2
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.away_team, Minnesota Vikings
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l4x
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.07941rp
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytb
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.07941v4
Minnesota Vikings, american_football.football_team.current_head_coach, Mike Zimmer
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.rushing, m.0793tc3
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.0793hdn
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0793td8
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.0793hgj
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk24
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.home_team, New Orleans Saints
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.0794l1b
m.01142m4k, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Chicago Bears, 2008-10-19, common.topic.notable_for, g.1256vb1pz
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.passing, m.0794rcw
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0793_v9
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l1q
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z6z
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794105
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.07941sq
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.0794l0n
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0794chx
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.home_team, Minnesota Vikings
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cmz
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytv
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.079409y
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0793tff
Minnesota Vikings at Green Bay Packers, 2008-09-08, american_football.football_game.home_team, Green Bay Packers
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_xd
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.season, 2008 NFL season
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.0vsc35t
Mike Zimmer, american_football.football_coach.current_team_head_coached, Minnesota Vikings
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytz
Minnesota Vikings, american_football.football_team.home_games, Green Bay Packers at Minnesota Vikings, 2008-11-09
Minnesota Vikings at Jacksonville Jaguars, 2008-11-23, american_football.football_game.season, 2008 NFL season
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.passing, m.07941mn
Minnesota Vikings, sports.professional_sports_team.owner_s, Zygi Wilf
Minnesota Vikings, american_football.football_team.home_games, Atlanta Falcons at Minnesota Vikings, 2008-12-21
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.0793hcd
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk46
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knjzz
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.07941pq
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.07941s6
Minnesota Vikings, american_football.football_team.away_games, Minnesota Vikings at Chicago Bears, 2008-10-19
m.04xgytg, american_football.football_historical_coach_position.team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.07942fr
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.07941vl
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk4x
Minnesota Vikings, american_football.football_team.away_games, Minnesota Vikings at Detroit Lions, 2008-12-07
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0794099
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.season, 2008 NFL season
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.passing, m.079428z
Viktor the Viking, sports.mascot.team, Minnesota Vikings
Minnesota Vikings, american_football.football_team.current_head_coach, Mike Zimmer
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytq
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.07942j5
Minnesota Vikings, american_football.football_team.home_games, New York Giants at Minnesota Vikings, 2008-12-28
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0793th5
m.0_msn3k, sports.sports_team_coach_tenure.team, Minnesota Vikings
Minnesota Vikings, american_football.football_team.away_games, Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.passing, m.09knjy4
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794ck3
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.passing, m.0793tb8
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l22
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.passing, m.079406l
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.passing, m.0794rdb
Minnesota Vikings at Pittsburgh Steelers, 2009-10-25, american_football.football_game.passing, m.07ybvcc
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.passing, m.0793z0c
m.0vsc35t, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.0793z4q
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.07940y6
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.0794204
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.0793z30
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.passing, m.09knk0p
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.05cvv0z
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.rushing, m.0794075
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.passing, m.0793_st
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.07940zf
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk0b
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.0793tcx
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cl2
Zygi Wilf, sports.sports_team_owner.teams_owned, Minnesota Vikings
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.passing, m.07941wc
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.0_5dx9_
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.rushing, m.0793tch
Minnesota Vikings, sports.sports_team.team_mascot, Viktor the Viking
Minnesota Vikings at Detroit Lions, 2009-09-20, american_football.football_game.home_team, Detroit Lions
m.04xgytl, american_football.football_historical_coach_position.team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.07942h8
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.0794rmd
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.0793z49
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.receiving, m.079408b
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.season, 2008 NFL season
Minnesota Vikings at Cleveland Browns, 2009-09-13, american_football.football_game.passing, m.07jqf8c
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk35
Minnesota Vikings at Carolina Panthers, 2009-12-20, american_football.football_game.home_team, Carolina Panthers
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.0793z2m
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.receiving, m.0794l3l
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.receiving, m.07941t4
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.0794rln
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.01142m4k
Minnesota Vikings at Chicago Bears, 2009-12-28, american_football.football_game.receiving, m.09knk4k
Minnesota Vikings at St. Louis Rams, 2009-10-11, american_football.football_game.home_team, St. Louis Rams
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.rushing, m.07941q_
New York Giants at Minnesota Vikings, 2008-12-28, american_football.football_game.receiving, m.0793hd5
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.0vsc3l2
Minnesota Vikings at Tennessee Titans, 2008-09-28, american_football.football_game.season, 2008 NFL season
Minnesota Vikings at Arizona Cardinals, 2008-12-14, american_football.football_game.receiving, m.079422f
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_y9
Minnesota Vikings, sports.sports_team.coaches, m.0_5dxtm
Minnesota Vikings at Tampa Bay Buccaneers, 2008-11-16, american_football.football_game.rushing, m.0794l0_
Minnesota Vikings at Pittsburgh Steelers, 2009-10-25, american_football.football_game.home_team, Pittsburgh Steelers
Minnesota Vikings at Chicago Bears, 2008-10-19, american_football.football_game.rushing, m.079407w
m.0vsc3l2, american_football.football_historical_coach_position.coach, Leslie Frazier

Answer: Leslie Frazier
Mike Zimmer