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 team that uses the M&T Bank Stadium did Jim Harbaugh play for? 
Knowledge Triplets: Jack Harbaugh, people.person.children, John Harbaugh
James Harbaugh, freebase.valuenotation.has_value, Weight
Philadelphia Eagles at San Francisco 49ers, 2008-10-12, american_football.football_game.home_team, San Francisco 49ers
Kansas City Chiefs at Baltimore Ravens, 2009-09-13, american_football.football_game.home_team, Baltimore Ravens
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at Cleveland Browns, 2008-11-02
Jim Harbaugh, american_football.football_player.forty_yard_dash_time, m.0wl2cd7
Arena/Stadium, owl#inverseOf, Teams
Pittsburgh Steelers at Baltimore Ravens, 2008-12-14, american_football.football_game.home_team, Baltimore Ravens
m.0n11ks_, education.education.student, Jim Harbaugh
m.05_g5_b, business.sponsorship.sponsored_by, M&T Bank
m.0j5zgbk, people.marriage.spouse, Miah Harbaugh
Chicago Bears at Baltimore Ravens, 2009-12-20, american_football.football_game.home_team, Baltimore Ravens
San Francisco 49ers, american_football.football_team.home_games, New England Patriots at San Francisco 49ers, 2008-10-05
Baltimore Ravens, american_football.football_team.home_games, Cleveland Browns at Baltimore Ravens, 2008-09-21
Stanford University Department of Athletics, Physical Education and Recreation, education.department.academics_old, Jim Harbaugh
Crestline, location.location.people_born_here, Jack Harbaugh
John Harbaugh, people.person.gender, Male
Baltimore Ravens at Cleveland Browns, 2009-11-16, american_football.football_game.away_team, Baltimore Ravens
San Francisco 49ers at Dallas Cowboys, 2008-11-23, american_football.football_game.away_team, San Francisco 49ers
Jack Harbaugh, people.person.profession, Coach
Addison Harbaugh, freebase.valuenotation.has_value, Weight
Miah Harbaugh, people.person.children, Grace Harbaugh
San Francisco 49ers at Houston Texans, 2009-10-25, american_football.football_game.away_team, San Francisco 49ers
Grace Harbaugh, common.topic.notable_for, g.125fxn3my
Grace Harbaugh, common.topic.notable_types, Person
Lucas Oil Stadium, sports.sports_facility.teams, Indianapolis Colts
Jim Harbaugh, american_football.football_coach.coaching_history, m.0hmxxbz
Jay Harbaugh, freebase.valuenotation.has_value, Date of birth
Baltimore Ravens at Green Bay Packers, 2009-12-07, american_football.football_game.away_team, Baltimore Ravens
James Harbaugh, freebase.valuenotation.has_value, Country of nationality
San Francisco 49ers at Minnesota Vikings, 2009-09-27, american_football.football_game.away_team, San Francisco 49ers
m.0hpd35p, people.sibling_relationship.sibling, John Harbaugh
San Francisco 49ers, sports.sports_team.league, m.0crtfjf
Jack Harbaugh, common.topic.notable_types, American football head coach
James Harbaugh, people.person.sibling_s, m.010rr5y8
Addison Harbaugh, people.person.gender, Female
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at New England Patriots, 2009-10-04
John Harbaugh, freebase.valuenotation.has_value, Height
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh283
Jim Harbaugh, people.person.children, Jay Harbaugh
Katherine Harbaugh, freebase.valuenotation.has_value, Country of nationality
Jim Harbaugh, common.topic.article, m.04rmt_
San Francisco 49ers, sports.sports_team.league, m.0crtm0h
Addison Harbaugh, people.person.parents, Sarah Feuerborn Harbaugh
San Francisco 49ers, sports.sports_team.venue, m.0n9gjdd
San Francisco 49ers, sports.sports_team.league, m.0crt9bh
Baltimore Ravens at Pittsburgh Steelers, 2008-09-29, american_football.football_game.away_team, Baltimore Ravens
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.05z1x6l
San Francisco 49ers at Philadelphia Eagles, 2009-12-20, american_football.football_game.away_team, San Francisco 49ers
San Francisco 49ers, american_football.football_team.current_head_coach, Jim Harbaugh
Jim Harbaugh, american_football.football_coach.current_team_head_coached, San Francisco 49ers
Addison Harbaugh, common.topic.notable_for, g.1255pdnsy
Arizona Cardinals at San Francisco 49ers, 2008-09-07, american_football.football_game.home_team, San Francisco 49ers
Katherine Harbaugh, people.person.sibling_s, m.010rr5y8
Baltimore Orioles, sports.sports_team.arena_stadium, Oriole Park at Camden Yards
Jim Harbaugh, sports.pro_athlete.teams, m.0hph3jg
Grace Harbaugh, freebase.valuenotation.has_value, Weight
Sarah Feuerborn Harbaugh, freebase.valuenotation.has_value, Country of nationality
M&T Bank Stadium, architecture.structure.architecture_firm, Populous
San Francisco 49ers, american_football.football_team.home_games, Chicago Bears at San Francisco 49ers, 2009-11-12
Addison Harbaugh, freebase.valuenotation.has_value, Height
Baltimore Ravens at San Diego Chargers, 2009-09-20, american_football.football_game.home_team, San Diego Chargers
Jack Harbaugh, people.person.children, Jim Harbaugh
Jay Harbaugh, freebase.valuenotation.has_value, Weight
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh28c
Jim Harbaugh, common.topic.notable_types, American football player
m.0hph3hb, sports.sports_team_roster.player, Jim Harbaugh
m.0crtfjf, sports.sports_league_participation.team, San Francisco 49ers
M&T Bank Stadium, location.location.events, 2011–12 NFL playoffs
m.0n9gjdd, sports.team_venue_relationship.team, San Francisco 49ers
San Francisco 49ers at Seattle Seahawks, 2008-09-14, american_football.football_game.away_team, San Francisco 49ers
San Francisco 49ers at St. Louis Rams, 2008-12-21, american_football.football_game.away_team, San Francisco 49ers
Cleveland Browns at Baltimore Ravens, 2009-09-27, american_football.football_game.home_team, Baltimore Ravens
Jim Harbaugh, people.person.education, m.0n1gfdw
Jim Harbaugh, sports.pro_athlete.teams, m.0hph3jp
Jim Harbaugh, sports.pro_athlete.sports_played_professionally, m.0d5hv8k
Jim Harbaugh, education.academic.departments_old, Stanford University Department of Athletics, Physical Education and Recreation
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at Pittsburgh Steelers, 2008-09-29
San Francisco 49ers, american_football.football_team.home_games, Detroit Lions at San Francisco 49ers, 2008-09-21
James Harbaugh, people.person.parents, Miah Harbaugh
m.0hph3jp, sports.sports_team_roster.player, Jim Harbaugh
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh27w
Baltimore Ravens at New York Giants, 2008-11-16, american_football.football_game.away_team, Baltimore Ravens
Jay Harbaugh, common.topic.notable_for, g.1257pbkp_
James Harbaugh, people.person.gender, Male
m.0wz1z80, sports.team_venue_relationship.venue, M&T Bank Stadium
M&T Bank Stadium, sports.sports_facility.home_venue_for, m.0wz1z80
Jim Harbaugh, sports.pro_athlete.teams, m.0hph3hz
Miah Harbaugh, people.person.spouse_s, m.0j5zgbk
Jim Harbaugh at 2010 Stanford football open house 2, common.image.appears_in_topic_gallery, Jim Harbaugh
Grace Harbaugh, people.person.parents, Miah Harbaugh
Jack Harbaugh, people.person.parents, Jim Harbaugh
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at Green Bay Packers, 2009-12-07
Katherine Harbaugh, people.person.parents, Jim Harbaugh
Jim Harbaugh, sports.pro_athlete.teams, m.0hph3jg
Jim Harbaugh, people.person.children, Addison Harbaugh
Grace Harbaugh, people.person.sibling_s, m.010rr5y8
San Francisco 49ers at New York Giants, 2008-10-19, american_football.football_game.away_team, San Francisco 49ers
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh297
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh28m
Cincinnati Bengals at Baltimore Ravens, 2008-09-07, american_football.football_game.home_team, Baltimore Ravens
M&T Bank Stadium, sports.sports_facility.teams, Baltimore Ravens
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh28h
Sarah Feuerborn Harbaugh, common.topic.notable_types, Person
Jim Harbaugh, common.topic.image, JimHarbaugh2007
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at Cleveland Browns, 2009-11-16
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.0vsc8gg
San Francisco 49ers at Seattle Seahawks, 2009-12-06, american_football.football_game.away_team, San Francisco 49ers
Baltimore Ravens, american_football.football_team.home_games, Pittsburgh Steelers at Baltimore Ravens, 2008-12-14
Jim Harbaugh, people.person.profession, American Football coach
Jim Harbaugh, people.person.education, m.0d0_0_r
Chicago Bears at San Francisco 49ers, 2009-11-12, american_football.football_game.away_team, Chicago Bears
Jack Harbaugh, people.person.parents, Sarah Feuerborn Harbaugh
Jay Harbaugh, people.person.sibling_s, m.010rr5y8
Baltimore Ravens at New England Patriots, 2009-10-04, american_football.football_game.away_team, Baltimore Ravens
Baltimore Ravens at Minnesota Vikings, 2009-10-18, american_football.football_game.away_team, Baltimore Ravens
Jim Harbaugh, award.award_winner.awards_won, m.0_qxpqk
Baltimore Ravens, american_football.football_team.home_games, Pittsburgh Steelers at Baltimore Ravens, 2009-11-29
m.0hpd34v, people.marriage.spouse, Jim Harbaugh
Jim Harbaugh, people.person.parents, Jack Harbaugh
Baltimore Ravens at New England Patriots, 2010-01-10, american_football.football_game.away_team, Baltimore Ravens
Baltimore Ravens, american_football.football_team.home_games, Oakland Raiders at Baltimore Ravens, 2008-10-26
Washington Redskins at San Francisco 49ers, 2008-12-28, american_football.football_game.home_team, San Francisco 49ers
Jim Harbaugh, common.topic.notable_for, g.125fjpygc
Jim Harbaugh, people.person.children, Grace Harbaugh
John Harbaugh, people.person.profession, American Football coach
Candlestick Park, sports.sports_facility.teams, San Francisco 49ers
M&T Bank Stadium, common.image.appears_in_topic_gallery, M&T Bank Stadium
m.0wz1z80, sports.team_venue_relationship.team, Baltimore Ravens
M&T Bank Stadium, common.topic.article, m.01yq7y
Katherine Harbaugh, common.topic.notable_for, g.1258vlwrl
Baltimore Ravens, american_football.football_team.home_games, Cleveland Browns at Baltimore Ravens, 2009-09-27
John Harbaugh, people.person.parents, Jack Harbaugh
Jim Harbaugh, people.person.sibling_s, m.0hpd35p
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at Houston Texans, 2008-11-09
2012–13 NFL playoffs, time.event.locations, M&T Bank Stadium
Tennessee Titans at Baltimore Ravens, 2008-10-05, american_football.football_game.home_team, Baltimore Ravens
James Harbaugh, freebase.valuenotation.has_value, Date of birth
m.010rr5y8, people.sibling_relationship.sibling, Grace Harbaugh
Jay Harbaugh, people.person.parents, Jim Harbaugh
M&T Bank Stadium, sports.sports_facility.teams, Baltimore Ravens
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at New York Giants, 2008-11-16
Miah Harbaugh, people.person.children, James Harbaugh
Baltimore Ravens, american_football.football_team.home_games, Philadelphia Eagles at Baltimore Ravens, 2008-11-23
Katherine Harbaugh, freebase.valuenotation.has_value, Date of birth
Jim Harbaugh, people.person.gender, Male
Jay Harbaugh, freebase.valuenotation.has_value, Country of nationality
Katherine Harbaugh, freebase.valuenotation.has_value, Place of birth
Baltimore Ravens at Dallas Cowboys, 2008-12-20, american_football.football_game.away_team, Baltimore Ravens
Katherine Harbaugh, common.topic.notable_types, Person
Jack Harbaugh, freebase.valuenotation.has_value, Height
M&T Bank Stadium, common.image.size, m.02bbxx7
San Francisco 49ers, american_football.football_team.home_games, New York Jets at San Francisco 49ers, 2008-12-07
Addison Harbaugh, freebase.valuenotation.has_value, Place of birth
Jay Harbaugh, people.person.gender, Male
Addison Harbaugh, people.person.parents, Jim Harbaugh
Jim Harbaugh, people.person.place_of_birth, Toledo
m.0hpd35p, people.sibling_relationship.sibling, Jim Harbaugh
m.010rr5y8, people.sibling_relationship.sibling, Jack Harbaugh
Jack Harbaugh, freebase.valuenotation.has_value, Country of nationality
Addison Harbaugh, people.person.sibling_s, m.010rr5y8
Indianapolis Colts, american_football.football_team.home_games, San Francisco 49ers at Indianapolis Colts, 2009-11-01
Baltimore Ravens, american_football.football_team.home_games, Washington Redskins at Baltimore Ravens, 2008-12-07
Baltimore Ravens at Cincinnati Bengals, 2008-11-30, american_football.football_game.away_team, Baltimore Ravens
Katherine Harbaugh, people.person.gender, Female
JimHarbaugh2007, common.image.appears_in_topic_gallery, Jim Harbaugh
m.0hph3hz, sports.sports_team_roster.player, Jim Harbaugh
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh29h
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh28r
Jim Harbaugh, people.person.children, James Harbaugh
Baltimore Ravens at San Diego Chargers, 2009-09-20, american_football.football_game.away_team, Baltimore Ravens
Philadelphia Eagles at Baltimore Ravens, 2008-11-23, american_football.football_game.home_team, Baltimore Ravens
Baltimore Ravens, american_football.football_team.home_games, Tennessee Titans at Baltimore Ravens, 2008-10-05
Indianapolis Colts, sports.sports_team.arena_stadium, Lucas Oil Stadium
Sarah Feuerborn Harbaugh, people.person.children, Katherine Harbaugh
San Francisco 49ers, american_football.football_team.home_games, Philadelphia Eagles at San Francisco 49ers, 2008-10-12
m.0j5zgbk, people.marriage.spouse, Jim Harbaugh
m.0hmxxbz, american_football.football_historical_coach_position.coach, Jim Harbaugh
Detroit Lions at San Francisco 49ers, 2009-12-27, american_football.football_game.home_team, San Francisco 49ers
m.0crt9hl, sports.sports_league_participation.team, Baltimore Ravens
Jim Harbaugh, common.topic.image, Jim Harbaugh at 2010 Stanford football open house 2
Pittsburgh Steelers at Baltimore Ravens, 2009-11-29, american_football.football_game.home_team, Baltimore Ravens
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh27_
Jack Harbaugh, common.topic.article, m.0274qg7
New York Jets at San Francisco 49ers, 2008-12-07, american_football.football_game.home_team, San Francisco 49ers
San Francisco 49ers, american_football.football_team.home_games, Tennessee Titans at San Francisco 49ers, 2009-11-08
m.0d0_0_r, education.education.student, Jim Harbaugh
Oakland Raiders at Baltimore Ravens, 2008-10-26, american_football.football_game.home_team, Baltimore Ravens
Chicago Bears at San Francisco 49ers, 2009-11-12, american_football.football_game.home_team, San Francisco 49ers
m.0hph3jg, sports.sports_team_roster.player, Jim Harbaugh
Jim Harbaugh, people.person.children, Jack Harbaugh
Miah Harbaugh, common.topic.notable_types, Person
Sarah Feuerborn Harbaugh, freebase.valuenotation.has_value, Height
Grace Harbaugh, freebase.valuenotation.has_value, Height
San Francisco 49ers at Buffalo Bills, 2008-11-30, american_football.football_game.away_team, San Francisco 49ers
Jack Harbaugh, people.person.sibling_s, m.010rr5y8
Grace Harbaugh, people.person.gender, Female
James Harbaugh, common.topic.notable_for, g.125by8_55
San Francisco 49ers, sports.sports_team.league, m.0crt4_7
m.05_g5_b, business.sponsorship.sponsored_recipient, M&T Bank Stadium
Jim Harbaugh, american_football.football_player.position_s, Quarterback
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh293
Miah Harbaugh, people.person.children, Jay Harbaugh
m.0crt9bh, sports.sports_league_participation.team, San Francisco 49ers
Jim Harbaugh, people.person.children, Katherine Harbaugh
Addison Harbaugh, freebase.valuenotation.has_value, Country of nationality
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh27r
M&T Bank Stadium, common.topic.image, M&T Bank Stadium
Sarah Feuerborn Harbaugh, people.person.spouse_s, m.0hpd34v
John Harbaugh, american_football.football_coach.current_team_head_coached, Baltimore Ravens
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.0qsbc6m
Jim Harbaugh, people.person.places_lived, m.03pkxrm
Seattle Seahawks at San Francisco 49ers, 2008-10-26, american_football.football_game.home_team, San Francisco 49ers
Sarah Feuerborn Harbaugh, people.person.children, Jack Harbaugh
Oriole Park at Camden Yards, sports.sports_facility.teams, Baltimore Orioles
Jim Harbaugh, people.person.profession, American football player
Baltimore Ravens at Cincinnati Bengals, 2009-11-08, american_football.football_game.away_team, Baltimore Ravens
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh287
James Harbaugh, people.person.parents, Jim Harbaugh
Grace Harbaugh, people.person.parents, Jim Harbaugh
John Harbaugh, people.person.sibling_s, m.0hpd35p
Baltimore Ravens, american_football.football_team.home_games, Cincinnati Bengals at Baltimore Ravens, 2008-09-07
Addison Harbaugh, freebase.valuenotation.has_value, Date of birth
M&T Bank Stadium, common.topic.notable_types, Sports Facility
Jack Harbaugh, common.topic.notable_types, Person
Baltimore Ravens, sports.sports_team.venue, m.0wz1z80
John Harbaugh, people.person.profession, Coach
m.0_qxpqk, award.award_honor.award_winner, Jim Harbaugh
m.010rr5y8, people.sibling_relationship.sibling, Katherine Harbaugh
Jim Harbaugh, sports.pro_athlete.teams, m.0hph3j6
San Francisco 49ers, american_football.football_team.home_games, Seattle Seahawks at San Francisco 49ers, 2008-10-26
Jay Harbaugh, people.person.parents, Miah Harbaugh
James Harbaugh, freebase.valuenotation.has_value, Place of birth
Jim Harbaugh, people.person.education, m.0n11ks_
m.010rr5y8, people.sibling_relationship.sibling, James Harbaugh
M&T Bank, business.sponsor.sponsorship, m.05_g5_b
Jim Harbaugh, people.person.spouse_s, m.0j5zgbk
James Harbaugh, common.topic.notable_types, Person
Baltimore Ravens, american_football.football_team.home_games, Jacksonville Jaguars at Baltimore Ravens, 2008-12-28
Jim Harbaugh, people.person.profession, Coach
San Francisco 49ers at Indianapolis Colts, 2009-11-01, american_football.football_game.home_team, Indianapolis Colts
M&T Bank Stadium, business.sponsored_recipient.sponsorship, m.05_g5_b
m.0hph3jg, sports.sports_team_roster.team, Baltimore Ravens
New England Patriots at San Francisco 49ers, 2008-10-05, american_football.football_game.home_team, San Francisco 49ers
Baltimore Ravens, american_football.football_team.home_games, Chicago Bears at Baltimore Ravens, 2009-12-20
Jay Harbaugh, freebase.valuenotation.has_value, Place of birth
2011–12 NFL playoffs, time.event.locations, M&T Bank Stadium
San Francisco 49ers, common.topic.article, m.06rp6
San Francisco 49ers at Indianapolis Colts, 2009-11-01, american_football.football_game.away_team, San Francisco 49ers
Jack Harbaugh, people.person.education, m.0w5bc62
Jacksonville Jaguars at Baltimore Ravens, 2008-12-28, american_football.football_game.home_team, Baltimore Ravens
Jack Harbaugh, freebase.valuenotation.has_value, Weight
Washington Redskins at Baltimore Ravens, 2008-12-07, american_football.football_game.home_team, Baltimore Ravens
Baltimore Ravens at Oakland Raiders, 2010-01-03, american_football.football_game.away_team, Baltimore Ravens
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh28w
Jack Harbaugh, people.person.place_of_birth, Crestline
Baltimore Ravens at Pittsburgh Steelers, 2009-12-27, american_football.football_game.away_team, Baltimore Ravens
Baltimore Ravens, american_football.football_team.away_games, Baltimore Ravens at Dallas Cowboys, 2008-12-20
Jay Harbaugh, freebase.valuenotation.has_value, Height
M&T Bank Stadium, location.location.events, 2012–13 NFL playoffs
Jack Harbaugh, common.topic.notable_for, g.11bbsnvzyb
Jack Harbaugh, freebase.valuenotation.has_value, Place of birth
John Harbaugh, people.person.place_of_birth, Toledo
m.0d5hv8k, sports.pro_sports_played.athlete, Jim Harbaugh
Sarah Feuerborn Harbaugh, people.person.children, Addison Harbaugh
Jim Harbaugh at 2010 Stanford football open house 2, common.image.size, m.02g_5qf
John Harbaugh, common.topic.notable_types, American football player
Baltimore Ravens, sports.sports_team.arena_stadium, M&T Bank Stadium
m.0hph3j6, sports.sports_team_roster.player, Jim Harbaugh
Atlanta Falcons at San Francisco 49ers, 2009-10-11, american_football.football_game.home_team, San Francisco 49ers
Chicago Bears at Baltimore Ravens, 2009-12-20, american_football.football_game.away_team, Chicago Bears
San Francisco 49ers, sports.sports_team.arena_stadium, Candlestick Park
San Francisco 49ers at New Orleans Saints, 2008-09-28, american_football.football_game.away_team, San Francisco 49ers
San Francisco 49ers, sports.sports_team.venue, m.0111fp78
Detroit Lions at Baltimore Ravens, 2009-12-13, american_football.football_game.home_team, Baltimore Ravens
M&T Bank Stadium, location.location.containedby, Baltimore
m.010rr5y8, people.sibling_relationship.sibling, Addison Harbaugh
Sarah Feuerborn Harbaugh, people.person.gender, Female
Jim Harbaugh, sports.pro_athlete.teams, m.0hph3hb
Katherine Harbaugh, people.person.parents, Sarah Feuerborn Harbaugh
Katherine Harbaugh, freebase.valuenotation.has_value, Height
Jay Harbaugh, common.topic.notable_types, Person
Jim Harbaugh, people.person.nationality, United States of America
Baltimore Ravens, american_football.football_team.current_head_coach, John Harbaugh
m.03pkxrm, people.place_lived.person, Jim Harbaugh
Cleveland Browns at Baltimore Ravens, 2008-09-21, american_football.football_game.home_team, Baltimore Ravens
Sarah Feuerborn Harbaugh, freebase.valuenotation.has_value, Weight
St. Louis Rams at San Francisco 49ers, 2009-10-04, american_football.football_game.home_team, San Francisco 49ers
m.010rr5y8, people.sibling_relationship.sibling, Jay Harbaugh
Seattle Seahawks at San Francisco 49ers, 2009-09-20, american_football.football_game.home_team, San Francisco 49ers
m.0n1gfdw, education.education.student, Jim Harbaugh
m.0hpd34v, people.marriage.spouse, Sarah Feuerborn Harbaugh
M&T Bank Stadium, location.location.geolocation, m.02_t6bj
Baltimore Ravens at Houston Texans, 2008-11-09, american_football.football_game.away_team, Baltimore Ravens
San Francisco 49ers, american_football.football_team.home_games, St. Louis Rams at San Francisco 49ers, 2008-11-16
m.0w5bc62, education.education.student, Jack Harbaugh
Katherine Harbaugh, freebase.valuenotation.has_value, Weight
M&T Bank Stadium, common.image.size, m.022r1d6
Detroit Lions at San Francisco 49ers, 2008-09-21, american_football.football_game.home_team, San Francisco 49ers
San Francisco 49ers, american_football.football_team.home_games, Washington Redskins at San Francisco 49ers, 2008-12-28
San Francisco 49ers, american_football.football_team.historical_coaching_staff, m.04xh29c
St. Louis Rams at San Francisco 49ers, 2008-11-16, american_football.football_game.home_team, San Francisco 49ers
San Francisco 49ers, american_football.football_team.home_games, Detroit Lions at San Francisco 49ers, 2009-12-27
M&T Bank Stadium, location.location.street_address, m.0hmxt5l
James Harbaugh, freebase.valuenotation.has_value, Height
Tennessee Titans at San Francisco 49ers, 2009-11-08, american_football.football_game.home_team, San Francisco 49ers
Baltimore Ravens at Cleveland Browns, 2008-11-02, american_football.football_game.away_team, Baltimore Ravens
Jacksonville Jaguars at San Francisco 49ers, 2009-11-29, american_football.football_game.home_team, San Francisco 49ers
Jack Harbaugh, people.person.gender, Male
Baltimore Ravens, american_football.football_team.home_games, Kansas City Chiefs at Baltimore Ravens, 2009-09-13
Grace Harbaugh, freebase.valuenotation.has_value, Country of nationality
Miah Harbaugh, people.person.gender, Female
Jack Harbaugh, common.topic.notable_for, g.12567dxth
San Francisco 49ers, american_football.football_team.home_games, St. Louis Rams at San Francisco 49ers, 2009-10-04
Addison Harbaugh, common.topic.notable_types, Person
Sarah Feuerborn Harbaugh, freebase.valuenotation.has_value, Place of birth
Baltimore Ravens at Tennessee Titans, 2009-01-10, american_football.football_game.away_team, Baltimore Ravens
M&T Bank Stadium, common.topic.notable_for, g.125dc4mxy
John Harbaugh, people.person.nationality, United States of America
Jim Harbaugh, people.person.spouse_s, m.0hpd34v
Baltimore Ravens, american_football.football_team.home_games, Detroit Lions at Baltimore Ravens, 2009-12-13
Grace Harbaugh, freebase.valuenotation.has_value, Place of birth
Baltimore Ravens at Pittsburgh Steelers, 2009-01-18, american_football.football_game.away_team, Baltimore Ravens

Answer: Baltimore Ravens