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 former Minnesota Vikings coach dies on 1983-05-02? 
Knowledge Triplets: Minnesota Vikings, american_football.football_team.home_games, Houston Texans at Minnesota Vikings, 2008-11-02
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2m31
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cmz
New York Giants at Minnesota Vikings, 2010-01-03, common.topic.notable_for, g.1255pk05f
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g66
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_jq
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2lyt
m.0_msn3k, sports.sports_team_coach_tenure.team, Minnesota Vikings
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.away_team, Green Bay Packers
m.0vsc3l2, american_football.football_historical_coach_position.team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhp1
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.07942nt
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytb
m.04xgytl, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytg
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g54
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g6k
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.rushing, m.0792g43
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_84
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.home_team, Minnesota Vikings
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_b7
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytv
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.07942n2
Minnesota Vikings, american_football.football_team.home_games, Philadelphia Eagles at Minnesota Vikings, 2009-01-04
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cl2
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.0_5dx9_
Minnesota Vikings, american_football.football_team.away_games, Minnesota Vikings at Green Bay Packers, 2009-11-01
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2m09
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.0vsc35t
m.0793mw3, american_football.game_receiving_statistics.game, Philadelphia Eagles at Minnesota Vikings, 2009-01-04
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_y9
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.passing, m.07z2ltk
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.rushing, m.07942mb
New York Giants, american_football.football_team.away_games, New York Giants at Minnesota Vikings, 2010-01-03
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2m0_
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.passing, m.0793_st
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2m0n
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.passing, m.0792g36
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g4g
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.passing, m.07z2l_j
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_95
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2m20
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.rushing, m.0793ms8
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_wk
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.passing, m.09rdhjr
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0794chb
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytb
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0793_tm
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_dp
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2m1p
m.0793mwj, american_football.game_receiving_statistics.game, Philadelphia Eagles at Minnesota Vikings, 2009-01-04
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.home_team, Minnesota Vikings
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.07942ng
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2lx4
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_zl
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2lyg
Minnesota Vikings, american_football.football_team.away_games, Minnesota Vikings at New Orleans Saints, 2008-10-06
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdht0
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhkz
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhtq
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.away_team, Houston Texans
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2lvf
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.passing, m.07z2lt_
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytl
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_d9
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.07942p_
m.0793mr4, american_football.game_passing_statistics.game, Philadelphia Eagles at Minnesota Vikings, 2009-01-04
m.04xgyv2, american_football.football_historical_coach_position.team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhr_
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_g2
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.passing, m.09rdhrk
m.07942l2, american_football.game_passing_statistics.game, Philadelphia Eagles at Minnesota Vikings, 2009-01-04
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2l_z
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_bl
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.home_team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhl9
m.04xgytg, american_football.football_historical_coach_position.team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhv1
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0794cjk
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_k1
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2lwt
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.passing, m.07942l2
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2l_5
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_fr
m.0vsc35t, american_football.football_historical_coach_position.team, Minnesota Vikings
Philadelphia Eagles, american_football.football_team.away_games, Philadelphia Eagles at Minnesota Vikings, 2009-01-04
Minnesota Vikings, sports.sports_team.coaches, m.0_msn3k
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_gf
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.season, 2008 NFL season
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g5h
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_hm
Minnesota Vikings, american_football.football_team.home_games, Green Bay Packers at Minnesota Vikings, 2009-10-05
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhsp
m.07942n2, american_football.game_receiving_statistics.game, Philadelphia Eagles at Minnesota Vikings, 2009-01-04
m.0_5dxtm, sports.sports_team_coach_tenure.team, Minnesota Vikings
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.07940k5
m.05cvv0z, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2lwg
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhl_
m.0_5dx9_, american_football.football_historical_coach_position.team, Minnesota Vikings
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.07940h1
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.rushing, m.0793mrl
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.01142m4k
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhqf
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhmb
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g5v
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793__3
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.passing, m.0793_s7
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.07942p5
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793msq
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793mvr
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.07940ln
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_cj
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2lw3
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_9w
Mike Zimmer, american_football.football_coach.current_team_head_coached, Minnesota Vikings
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cmf
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cls
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.rushing, m.07940fz
Minnesota Vikings, sports.sports_team.coaches, m.0_5dxtm
m.04xgytq, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0794cgr
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhn0
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhkm
m.01013ckt, tv.tv_regular_personal_appearance.seasons, Green Bay Packers at Minnesota Vikings, 2009-10-05
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0793_v_
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2ly0
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794ck3
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.rushing, m.07942lv
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.passing, m.07p5_6z
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_h_
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g6y
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_8v
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2m1b
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cp9
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2lzh
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2m3d
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhvr
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_f0
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_8h
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_7g
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2m2q
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.season, 2009 NFL season
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0793_xd
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793mt1
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793mtd
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, common.topic.notable_for, g.125bw8zb5
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.0792g4t
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhln
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.passing, m.0792g3p
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.rushing, m.07z2lvs
m.04xgytb, american_football.football_historical_coach_position.team, Minnesota Vikings
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.passing, m.07p5_5k
Minnesota Vikings, american_football.football_team.current_head_coach, Mike Zimmer
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.rushing, m.07942mr
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2lz4
m.04xgytz, american_football.football_historical_coach_position.team, Minnesota Vikings
m.09rdhjr, american_football.game_passing_statistics.game, New York Giants at Minnesota Vikings, 2010-01-03
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.05cvv0z
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgyv2
m.0ztjbtf, sports.sports_team_coach_tenure.team, Minnesota Vikings
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.passing, m.09rdhk5
Minnesota Vikings at Detroit Lions, 2008-12-07, american_football.football_game.passing, m.07941m1
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.07940jg
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.passing, m.07p5_cw
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.rushing, m.07940gd
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_fd
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.0vsc3l2
m.01142m4k, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2m2c
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.receiving, m.0794cq3
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhsb
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytq
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhpr
Minnesota Vikings, sports.professional_sports_team.owner_s, Zygi Wilf
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhtc
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhqs
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhq2
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.passing, m.09rdhr3
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhpd
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.rushing, m.0793_v9
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793mw3
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.away_team, Minnesota Vikings
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.07942pk
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.07940hk
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793mtr
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793mwj
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.rushing, m.07p5_7t
Houston Texans at Minnesota Vikings, 2008-11-02, common.topic.notable_for, g.125dv3s0d
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_jb
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.away_team, Minnesota Vikings
m.04xgytb, american_football.football_coach.coaching_history, Norm Van Brocklin
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.rushing, m.09rdhmp
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.home_team, Minnesota Vikings
Minnesota Vikings at Green Bay Packers, 2009-11-01, american_football.football_game.receiving, m.07z2lzv
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.rushing, m.0793mry
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.passing, m.07940dv
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.rushing, m.07940ff
Minnesota Vikings, american_football.football_team.historical_coaching_staff, m.04xgytz
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.passing, m.0793mr4
m.04xgytv, american_football.football_historical_coach_position.team, Minnesota Vikings
Minnesota Vikings, american_football.football_team.home_games, New York Giants at Minnesota Vikings, 2010-01-03
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.away_team, New York Giants
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.away_team, Philadelphia Eagles
Minnesota Vikings, sports.sports_team.coaches, m.0ztjbtf
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhvd
Minnesota Vikings at New Orleans Saints, 2008-10-06, american_football.football_game.passing, m.0794cfg
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhnc
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_9j
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.rushing, m.0794chx
Houston Texans at Minnesota Vikings, 2008-11-02, american_football.football_game.receiving, m.07940kw
Green Bay Packers at Minnesota Vikings, 2009-10-05, american_football.football_game.receiving, m.07p5_c5
New York Giants at Minnesota Vikings, 2010-01-03, american_football.football_game.receiving, m.09rdhnq
Philadelphia Eagles at Minnesota Vikings, 2009-01-04, american_football.football_game.receiving, m.0793mvb

Answer: Norm Van Brocklin