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: Which player who started his career earliest was a 2012 Ravens quarterback? 
Knowledge Triplets: m.09tc5k1, american_football.game_passing_statistics.game, Baltimore Ravens at Indianapolis Colts, 2010-01-16
m.07t46r5, american_football.game_passing_statistics.team, Baltimore Ravens
m.07mljkv, american_football.game_passing_statistics.team, Baltimore Ravens
Chicago Bears at Baltimore Ravens, 2009-12-20, american_football.football_game.passing, m.09k0f80
Jordan Wynn, american_football.football_player.position_s, Quarterback
m.09tc5pk, american_football.game_passing_statistics.game, Baltimore Ravens at Indianapolis Colts, 2010-01-16
m.07920nz, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Minnesota Vikings, 2009-10-18, american_football.football_game.passing, m.07vr65j
Cleveland Browns at Baltimore Ravens, 2009-09-27, american_football.football_game.passing, m.07nn218
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.passing, m.0901mzx
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlcj8
Baltimore Ravens at New York Giants, 2008-11-16, american_football.football_game.passing, m.0793fwt
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdlbk
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.passing, m.09kngbj
Baltimore Ravens at Green Bay Packers, 2009-12-07, american_football.football_game.passing, m.098jnth
m.09rls5w, american_football.game_passing_statistics.game, Baltimore Ravens at New England Patriots, 2010-01-10
Baltimore Ravens at New England Patriots, 2009-10-04, american_football.football_game.passing, m.07p5wzx
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcfp
m.09g393p, american_football.game_passing_statistics.team, Baltimore Ravens
m.07mljjv, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5ln
Ted Marchibroda, american_football.football_player.position_s, Quarterback
m.07921lv, american_football.game_passing_statistics.team, Baltimore Ravens
Tom Brady, american_football.football_player.position_s, Quarterback
Gary Kubiak, american_football.football_player.position_s, Quarterback
Chicago Bears at Baltimore Ravens, 2009-12-20, american_football.football_game.passing, m.09k0f3q
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rls9d
Baltimore Ravens at Houston Texans, 2008-11-09, american_football.football_game.passing, m.0792g7h
Kansas City Chiefs at Baltimore Ravens, 2009-09-13, american_football.football_game.passing, m.07jqb0m
Washington Redskins at Baltimore Ravens, 2008-12-07, american_football.football_game.passing, m.07922d9
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.passing, m.09rdldz
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcf4
Chicago Bears at Baltimore Ravens, 2009-12-20, american_football.football_game.passing, m.09k0f8g
m.09rlsb2, american_football.game_passing_statistics.game, Baltimore Ravens at New England Patriots, 2010-01-10
m.09k0f3q, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.passing, m.09tc5pk
Cleveland Browns at Baltimore Ravens, 2008-09-21, american_football.football_game.passing, m.0792728
Baltimore Ravens at San Diego Chargers, 2009-09-20, american_football.football_game.passing, m.07mljjv
m.07923bk, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rlsc6
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rls8c
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdl9j
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcd6
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlck8
m.079226w, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Minnesota Vikings, 2009-10-18, american_football.football_game.passing, m.07vr6dj
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.passing, m.08nlc80
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlcl
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rls6_
m.09tc5pk, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlccv
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5qs
Max Browne, american_football.football_player.position_s, Quarterback
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.passing, m.09kng64
Baltimore Ravens at San Diego Chargers, 2009-09-20, american_football.football_game.passing, m.07mlj62
Kyle Boller, american_football.football_player.position_s, Quarterback
m.07nn21q, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5nv
m.07922vh, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlht
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5nf
m.0792219, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Cleveland Browns, 2008-11-02, american_football.football_game.passing, m.07921gw
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5ry
Baltimore Ravens at Cleveland Browns, 2008-11-02, american_football.football_game.passing, m.079286c
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5n2
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.receiving, m.07922zr
Oakland Raiders at Baltimore Ravens, 2008-10-26, american_football.football_game.passing, m.079322k
Baltimore Ravens at Pittsburgh Steelers, 2008-09-29, american_football.football_game.passing, m.07920nz
m.07921m9, american_football.game_passing_statistics.team, Baltimore Ravens
m.07z2j0t, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5rl
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlc8m
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlckz
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rls9r
Max Browne, soccer.football_player.position_s, Quarterback
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rls80
m.07923hg, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcch
Baltimore Ravens at Pittsburgh Steelers, 2008-09-29, american_football.football_game.passing, m.0792b9p
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5r3
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.passing, m.09rdl89
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlhg
m.079218b, american_football.game_passing_statistics.team, Baltimore Ravens
m.07921gw, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcc4
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5q0
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.rushing, m.0793cf1
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.passing, m.0792d47
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5s9
Philadelphia Eagles at Baltimore Ravens, 2008-11-23, american_football.football_game.passing, m.0792219
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdldm
Baltimore Ravens at New York Giants, 2008-11-16, american_football.football_game.passing, m.07921v3
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5kj
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rlscx
m.07922d9, american_football.game_passing_statistics.team, Baltimore Ravens
Washington Redskins at Baltimore Ravens, 2008-12-07, american_football.football_game.passing, m.0793r1c
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rls6n
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5s_
m.07jq9q_, american_football.game_passing_statistics.team, Baltimore Ravens
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, american_football.football_game.passing, m.096qbj1
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.passing, m.08nlcgv
Baltimore Ravens at Indianapolis Colts, 2008-10-12, american_football.football_game.passing, m.07920zt
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlchg
Baltimore Ravens at Green Bay Packers, 2009-12-07, american_football.football_game.passing, m.098jn_d
Baltimore Ravens at Houston Texans, 2008-11-09, american_football.football_game.passing, m.07921lv
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdljh
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlj4
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rls8q
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5tb
m.0792336, american_football.game_passing_statistics.team, Baltimore Ravens
m.07920zt, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at New England Patriots, 2009-10-04, american_football.football_game.passing, m.07p5wsk
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdl9w
Detroit Lions at Baltimore Ravens, 2009-12-13, american_football.football_game.passing, m.09g3943
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.passing, m.09rls5w
m.09k0f44, american_football.game_passing_statistics.team, Baltimore Ravens
m.07921v3, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.receiving, m.0793ckm
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5qd
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.rushing, m.09kng6y
m.07vr6dj, american_football.game_passing_statistics.team, Baltimore Ravens
Cleveland Browns at Baltimore Ravens, 2009-09-27, american_football.football_game.passing, m.07nn21q
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, american_football.football_game.passing, m.096qb7h
m.09kngbj, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Houston Texans, 2008-11-09, american_football.football_game.passing, m.07921m9
Detroit Lions at Baltimore Ravens, 2009-12-13, american_football.football_game.passing, m.09g3990
Baltimore Ravens at Miami Dolphins, 2009-01-04, american_football.football_game.passing, m.0791sws
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.passing, m.09rlsb2
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdlfr
Cleveland Browns at Baltimore Ravens, 2008-09-21, american_football.football_game.passing, m.07920ft
m.07920tq, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlc9z
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlgs
m.07923p2, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rls91
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5tp
Baltimore Ravens at San Diego Chargers, 2009-09-20, american_football.football_game.passing, m.07mljkv
Baltimore Ravens at Miami Dolphins, 2009-01-04, american_football.football_game.passing, m.07923bk
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rlsbj
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlc9g
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.receiving, m.0793cj6
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlc7
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.rushing, m.09kng6l
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlc8z
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5kw
Detroit Lions at Baltimore Ravens, 2009-12-13, american_football.football_game.passing, m.09g393p
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlckm
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.passing, m.07922vh
Baltimore Ravens at Cleveland Browns, 2008-11-02, american_football.football_game.receiving, m.07928bn
m.098jn_d, american_football.game_passing_statistics.team, Baltimore Ravens
Oakland Raiders at Baltimore Ravens, 2008-10-26, american_football.football_game.passing, m.079218b
m.09rlsb2, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.receiving, m.0793cgh
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rlsdy
Bobby Petrino, american_football.football_player.position_s, Quarterback
m.07nn218, american_football.game_passing_statistics.team, Baltimore Ravens
John Harbaugh, american_football.football_coach.current_team_head_coached, Baltimore Ravens
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdl95
m.07p5wzx, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlcbg
Baltimore Ravens at Indianapolis Colts, 2008-10-12, american_football.football_game.passing, m.0792j4h
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5sn
Baltimore Ravens at Tennessee Titans, 2009-01-10, american_football.football_game.passing, m.0792tdk
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.passing, m.09tc5k1
Chicago Bears at Baltimore Ravens, 2009-12-20, american_football.football_game.passing, m.09k0f44
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5mr
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rlsdl
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rls69
Cleveland Browns at Baltimore Ravens, 2009-09-27, american_football.football_game.passing, m.07nn27b
Cleveland Browns at Baltimore Ravens, 2009-09-27, american_football.football_game.passing, m.07nn27s
m.088wzh0, american_football.game_passing_statistics.team, Baltimore Ravens
m.0792135, american_football.game_passing_statistics.team, Baltimore Ravens
m.09g3943, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdlg2
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdld8
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.passing, m.0793cc_
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcbt
Baltimore Ravens at Pittsburgh Steelers, 2009-01-18, american_football.football_game.passing, m.0792dtd
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rls7p
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.rushing, m.08nlchx
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.rushing, m.09tc5l7
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.passing, m.08nlcg3
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcjy
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.receiving, m.09rlsd7
Baltimore Ravens, american_football.football_team.current_head_coach, John Harbaugh
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5p5
m.079233s, american_football.game_passing_statistics.team, Baltimore Ravens
Brett Favre, american_football.football_player.position_s, Quarterback
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rlsbw
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlh3
Oakland Raiders at Baltimore Ravens, 2008-10-26, american_football.football_game.passing, m.079218t
Baltimore Ravens at Tennessee Titans, 2009-01-10, american_football.football_game.passing, m.07923hg
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.receiving, m.09kngdp
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdlb6
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rlsck
m.079218t, american_football.game_passing_statistics.team, Baltimore Ravens
m.07920ft, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.receiving, m.09kngdb
Denver Broncos at Baltimore Ravens, 2009-11-01, american_football.football_game.passing, m.07z2j0t
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlcy
m.079226d, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Pittsburgh Steelers, 2009-01-18, american_football.football_game.passing, m.07923p2
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5l_
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.passing, m.09rdl8r
Baltimore Ravens at Cincinnati Bengals, 2009-11-08, american_football.football_game.passing, m.088wz5s
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.rushing, m.09kngbz
m.09rdldz, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Miami Dolphins, 2008-10-19, american_football.football_game.passing, m.0792135
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.rushing, m.09rdlfd
m.0792061, american_football.game_passing_statistics.team, Baltimore Ravens
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.receiving, m.09kng9b
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.receiving, m.09rdlbx
Baltimore Ravens at Indianapolis Colts, 2010-01-16, american_football.football_game.receiving, m.09tc5md
Denver Broncos at Baltimore Ravens, 2009-11-01, american_football.football_game.passing, m.07z2j5c
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.receiving, m.08nlcdp
Indianapolis Colts at Baltimore Ravens, 2009-11-22, american_football.football_game.passing, m.0901mfp
Joe Flacco, american_football.football_player.position_s, Quarterback
m.096qb7h, american_football.game_passing_statistics.team, Baltimore Ravens
Philadelphia Eagles at Baltimore Ravens, 2008-11-23, american_football.football_game.passing, m.0793lb6
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.passing, m.07922mc
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.rushing, m.0793cdl
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.rushing, m.09rls7b

Answer: Trent Dilfer