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 team with mascot named T-Rac? 
Knowledge Triplets: American Football Conference, sports.sports_league.teams, m.0crt9h7
m.0hpdx4b, american_football.football_historical_coach_position.team, Tennessee Titans
m.0_1y4t_, sports.sports_team_coach_tenure.coach, Ken Whisenhunt
Tennessee Titans, american_football.football_team.home_games, St. Louis Rams at Tennessee Titans, 2009-12-13
Tennessee Titans, sports.professional_sports_team.draft_picks, m.010hb__6
Tennessee Titans, sports.sports_team.coaches, m.0_1y4t_
Mascot, type.type.expected_by, Team Mascot
Tennessee Titans, american_football.football_team.historical_coaching_staff, m.0hpj72y
Tennessee Oilers, sports.defunct_sports_team.sport, American football
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Detroit Lions, 2008-11-27
Tennessee Titans, american_football.football_team.home_games, Pittsburgh Steelers at Tennessee Titans, 2008-12-21
Tennessee Titans, sports.sports_team.league, m.0crt4vd
Ken Whisenhunt, sports.sports_team_coach.teams_coached, m.0_1y4t_
m.05bj8yh, sports.sports_league_draft_pick.team, Tennessee Titans
Team Mascot, type.property.expected_type, Mascot
m.010hb__6, sports.sports_league_draft_pick.team, Tennessee Titans
Tennessee Titans, sports.sports_team.colors, Navy Blue
Team, rdf-schema#domain, Mascot
T-Rac, common.topic.article, m.09p_1_
Tennessee Titans, american_football.football_team.division, AFC South
AFC South, american_football.football_division.conference, American Football Conference
Tennessee Titans, sports.sports_team.season_record, m.075fszs
AFC South, american_football.football_division.teams, Tennessee Titans
m.075fszs, sports.sports_team_season_record.team, Tennessee Titans
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at New England Patriots, 2009-10-18
Mascot, freebase.type_profile.published, Published
m.0crt9h7, sports.sports_league_participation.league, American Football Conference
m.0422dwy, common.webpage.topic, Tennessee Titans
Mascot, freebase.documented_object.documentation, m.02ht4bx
Ken Whisenhunt, american_football.football_coach.current_team_head_coached, Tennessee Titans
m.075fs_8, sports.sports_team_season_record.team, Tennessee Titans
Sports, type.domain.types, Professional Sports Team
Tennessee Titans, american_football.football_team.home_games, Minnesota Vikings at Tennessee Titans, 2008-09-28
m.05hqrd5, sports.sports_league_draft_pick.team, Tennessee Titans
Tennessee Titans, sports.professional_sports_team.draft_picks, m.05bv5rc
Team, type.property.master_property, Team Mascot
Tennessee Titans, sports.sports_team.season_record, m.075ft0j
Tennessee Titans at Pittsburgh Steelers, 2009-09-10, american_football.football_game.away_team, Tennessee Titans
American Football Conference, sports.sports_league.sport, American football
Tennessee Titans, common.topic.article, m.07l2x
m.02ht4nn, common.webpage.topic, Tennessee Titans
Baltimore Ravens at Tennessee Titans, 2009-01-10, american_football.football_game.home_team, Tennessee Titans
Tennessee Titans, common.topic.notable_for, g.1257wfnft
Tennessee Titans, american_football.football_team.home_games, Houston Texans at Tennessee Titans, 2008-09-21
2000 AFC Championship Game, sports.sports_championship_event.champion, Tennessee Titans
Tennessee Titans at Chicago Bears, 2008-11-09, american_football.football_game.away_team, Tennessee Titans
LP Field, location.location.containedby, Nashville
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Kansas City Chiefs, 2008-10-19
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Houston Texans, 2009-11-23
Tennessee Titans, american_football.football_team.home_games, Indianapolis Colts at Tennessee Titans, 2009-10-11
Tennessee Titans, sports.professional_sports_team.draft_picks, m.05bv73x
Ken Whisenhunt, sports.sports_team_coach.sports_coached, American football
Tennessee Titans, sports.professional_sports_team.draft_picks, m.010hdpsc
T-Rac, sports.mascot.team, Tennessee Titans
Topic, freebase.type_profile.published, Published
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Indianapolis Colts, 2009-12-06
Tennessee Titans, base.ontologies.ontology_instance.equivalent_instances, m.07nfyj8
Tennessee Titans, sports.sports_team.league, m.0crt9h7
m.010hdpsc, sports.sports_league_draft_pick.team, Tennessee Titans
Tennessee Titans, sports.sports_team.season_record, m.075fs_j
Titans trac, common.image.appears_in_topic_gallery, T-Rac
Tennessee Titans, american_football.football_team.conference, American Football Conference
m.051rf13, american_football.football_historical_coach_position.team, Tennessee Titans
Tennessee Titans, sports.professional_sports_team.draft_picks, m.05bv593
Tennessee Titans, american_football.football_team.home_games, Arizona Cardinals at Tennessee Titans, 2009-11-29
Tennessee Titans, american_football.football_team.current_head_coach, Ken Whisenhunt
Minnesota Vikings at Tennessee Titans, 2008-09-28, american_football.football_game.home_team, Tennessee Titans
Mascot, common.topic.article, m.02ht4bx
Team Mascot, owl#inverseOf, Team
Mascot, freebase.type_profile.strict_included_types, Topic
Tennessee Titans, sports.professional_sports_team.draft_picks, m.0668dbw
Tennessee Titans, sports.professional_sports_team.draft_picks, m.010hbv1g
Tennessee Titans, american_football.football_team.home_games, Miami Dolphins at Tennessee Titans, 2009-12-20
Tennessee Titans, sports.sports_team.season_record, m.075ft08
T-Rac, common.topic.image, Titans trac
Tennessee Titans, sports.sports_team.season_record, m.075fs_0
Tennessee Titans, sports.sports_team.colors, White
Tennessee Titans, sports.sports_team.venue, m.0wz1z9t
m.0hpj72y, american_football.football_historical_coach_position.team, Tennessee Titans
Tennessee Oilers, sports.sports_team.sport, American football
Tennessee Titans, american_football.football_team.home_games, Jacksonville Jaguars at Tennessee Titans, 2008-09-07
LP Field, sports.sports_facility.teams, Tennessee Titans
m.0zwcc7t, american_football.football_historical_coach_position.team, Tennessee Titans
m.0crt4vd, sports.sports_league_participation.team, Tennessee Titans
Sports, type.domain.types, Mascot
Tennessee Titans, american_football.football_team.home_games, Buffalo Bills at Tennessee Titans, 2009-11-15
Miami Dolphins at Tennessee Titans, 2009-12-20, american_football.football_game.home_team, Tennessee Titans
m.05bv593, sports.sports_league_draft_pick.team, Tennessee Titans
m.0_qyfck, award.award_nomination.award_nominee, Tennessee Titans
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Cincinnati Bengals, 2008-09-14
LP Field, sports.sports_facility.home_venue_for, m.0wz1z9t
m.0_1y4t_, sports.sports_team_coach_tenure.team, Tennessee Titans
Tennessee Titans, sports.sports_team.sport, American football
m.0wz1z9t, sports.team_venue_relationship.venue, LP Field
Professional Sports Team, type.type.domain, Sports
Tennessee Titans, american_football.football_team.historical_coaching_staff, m.0hpdx4b
Cleveland Browns at Tennessee Titans, 2008-12-07, american_football.football_game.home_team, Tennessee Titans
Buffalo Bills at Tennessee Titans, 2009-11-15, american_football.football_game.home_team, Tennessee Titans
Tennessee Titans, sports.professional_sports_team.draft_picks, m.05bj8yh
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Jacksonville Jaguars, 2008-11-16
Tennessee Titans, common.topic.image, Tennessee Titans Helmet
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Chicago Bears, 2008-11-09
m.075fs_0, sports.sports_team_season_record.team, Tennessee Titans
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at San Francisco 49ers, 2009-11-08
Tennessee Titans, sports.sports_team.season_record, m.075fszj
AFC South, sports.sports_league.sport, American football
Tennessee Titans, common.topic.webpage, m.09wdt34
Tennessee Titans at Cincinnati Bengals, 2008-09-14, american_football.football_game.away_team, Tennessee Titans
Tennessee Titans, american_football.football_team.home_games, Houston Texans at Tennessee Titans, 2009-09-20
Titans trac, common.image.size, m.01z0lff
Tennessee Titans, common.topic.image, TennesseeTitans 1000.png
Tennessee Titans, sports.sports_team.colors, Red
Tennessee Titans at Baltimore Ravens, 2008-10-05, american_football.football_game.away_team, Tennessee Titans
Tennessee Titans, american_football.football_team.home_games, San Diego Chargers at Tennessee Titans, 2009-12-25
Tennessee Titans, sports.sports_team.league, m.0crtfb5
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Pittsburgh Steelers, 2009-09-10
m.0_rd9cq, american_football.football_historical_coach_position.team, Tennessee Titans
m.0668dbw, sports.sports_league_draft_pick.team, Tennessee Titans
T-Rac.jpg, common.image.size, m.0kksz7
m.0wz1z9t, sports.team_venue_relationship.team, Tennessee Titans
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Jacksonville Jaguars, 2009-10-04
Tennessee Titans, sports.sports_team.colors, Titan Blue
T-Rac, common.topic.notable_types, Mascot
m.075ft08, sports.sports_team_season_record.team, Tennessee Titans
Mascot, freebase.type_profile.kind, Title
m.09wdt34, common.webpage.topic, Tennessee Titans
Tennessee Titans, american_football.football_team.historical_coaching_staff, m.0_rd9cq
Tennessee Titans, american_football.football_team.home_games, Baltimore Ravens at Tennessee Titans, 2009-01-10
Tennessee Titans, american_football.football_team.historical_coaching_staff, m.0zwcc7t
Tennessee Titans, sports.sports_team.arena_stadium, LP Field
Mascot, freebase.type_profile.equivalent_topic, Mascot
Tennessee Titans, sports.sports_team.season_record, m.075fs_s
Team Mascot, type.property.reverse_property, Team
Professional Sports Team, freebase.type_hints.included_types, Topic
m.075fs_j, sports.sports_team_season_record.team, Tennessee Titans
Bud Adams, sports.sports_team_owner.teams_owned, Tennessee Titans
T-Rac, common.topic.image, T-Rac.jpg
Tennessee Titans, sports.sports_team.season_record, m.075ft00
m.075fszj, sports.sports_team_season_record.team, Tennessee Titans
Tennessee Titans at San Francisco 49ers, 2009-11-08, american_football.football_game.away_team, Tennessee Titans
m.075ft00, sports.sports_team_season_record.team, Tennessee Titans
Tennessee Titans, american_football.football_team.current_head_coach, Ken Whisenhunt
m.0dhtcj1, common.webpage.topic, Tennessee Titans
AFC South, sports.sports_league.teams, m.0crtfb5
T-Rac, sports.mascot.team, Tennessee Titans
Tennessee Titans, common.topic.notable_types, Professional Sports Team
Mascot, type.type.expected_by, sports_team_mascot
Tennessee Titans, american_football.football_team.home_games, New York Jets at Tennessee Titans, 2008-11-23
Mascot, freebase.type_hints.included_types, Topic
Tennessee Titans, american_football.football_team.historical_coaching_staff, m.051rf13
American football, sports.sport.team_coaches, Ken Whisenhunt
T-Rac.jpg, common.image.appears_in_topic_gallery, T-Rac
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Houston Texans, 2008-12-14
Tennessee Titans, sports.sports_team.team_mascot, T-Rac
m.075ft0s, sports.sports_team_season_record.team, Tennessee Titans
Team Mascot, rdf-schema#range, Mascot
Team, type.property.schema, Mascot
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Indianapolis Colts, 2008-12-28
m.0crtfb5, sports.sports_league_participation.team, Tennessee Titans
Mascot, type.type.properties, Team
m.05bv73x, sports.sports_league_draft_pick.team, Tennessee Titans
m.0y7zf7s, american_football.football_historical_coach_position.team, Tennessee Titans
Tennessee Titans, sports.professional_sports_team.owner_s, Bud Adams
Tennessee Titans, american_football.football_team.home_games, Green Bay Packers at Tennessee Titans, 2008-11-02
Tennessee Titans, sports.professional_sports_team.draft_picks, m.05cdl95
American Football Conference, american_football.football_conference.teams, Tennessee Titans
Tennessee Titans, common.topic.webpage, m.02ht4nn
m.07nfyj8, base.ontologies.ontology_instance_mapping.freebase_topic, Tennessee Titans
Tennessee Titans, common.topic.webpage, m.0dhtcj1
Tennessee Titans, sports.sports_team.season_record, m.075ft0s
Tennessee Titans at Seattle Seahawks, 2010-01-03, american_football.football_game.away_team, Tennessee Titans
T-Rac, common.topic.notable_for, g.125bspv_z
m.0crtfb5, sports.sports_league_participation.league, AFC South
Tennessee Titans, american_football.football_team.home_games, Jacksonville Jaguars at Tennessee Titans, 2009-11-01
m.05bv5rc, sports.sports_league_draft_pick.team, Tennessee Titans
Tennessee Titans, sports.sports_team.championships, 2000 AFC Championship Game
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Seattle Seahawks, 2010-01-03
m.075ft0j, sports.sports_team_season_record.team, Tennessee Titans
Professional Sports Team, freebase.type_profile.strict_included_types, Topic
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at Baltimore Ravens, 2008-10-05
Tennessee Titans, sports.sports_team.location, Nashville
Tennessee Titans, sports.professional_sports_team.draft_picks, m.05hqrd5
Pittsburgh Steelers at Tennessee Titans, 2008-12-21, american_football.football_game.home_team, Tennessee Titans
Tennessee Titans, sports.sports_team.season_record, m.075fs_8
Tennessee Titans, common.topic.webpage, m.0422dwy
Tennessee Oilers, sports.defunct_sports_team.later_known_as, Tennessee Titans
Tennessee Titans, american_football.football_team.home_games, Cleveland Browns at Tennessee Titans, 2008-12-07
Tennessee Titans, sports.sports_team.previously_known_as, Tennessee Oilers
m.010hbv1g, sports.sports_league_draft_pick.team, Tennessee Titans
m.075fs_s, sports.sports_team_season_record.team, Tennessee Titans
Tennessee Titans at New England Patriots, 2009-10-18, american_football.football_game.away_team, Tennessee Titans
Tennessee Titans, american_football.football_team.away_games, Tennessee Titans at New York Jets, 2009-09-27
Mascot, type.type.domain, Sports
American Football Conference, american_football.football_conference.divisions, AFC South
m.0crt9h7, sports.sports_league_participation.team, Tennessee Titans
m.05cdl95, sports.sports_league_draft_pick.team, Tennessee Titans
Tennessee Titans, award.award_nominee.award_nominations, m.0_qyfck
Tennessee Titans, american_football.football_team.historical_coaching_staff, m.0y7zf7s
Tennessee Titans, american_football.football_team.home_games, Indianapolis Colts at Tennessee Titans, 2008-10-27
Nashville, sports.sports_team_location.teams, Tennessee Titans

Answer: Ken Whisenhunt