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 ran as the vice president for the president who spoke about education reform in 2012? 
Knowledge Triplets: Literature Subject, type.type.properties, Musical compositions about this topic
Joe Biden, people.person.children, Beau Biden
Joe Biden, people.person.places_lived, m.04hzwhy
m.05v7ch0, film.performance.film, Tom Brown's School Days
m.02_x98m, government.government_position_held.office_holder, Joe Biden
Tom Brown's School Days, film.film.starring, m.05v7chd
m.03pr98t, people.place_lived.person, Joe Biden
English Language, language.human_language.main_country, United States of America
Topic, freebase.type_profile.published, Published
Joe Biden, people.person.children, Naomi Biden
m.0n1pgvw, film.personal_film_appearance.person, Joe Biden
Joe Biden, people.person.children, Ashley Biden
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, American Federation of Teachers
Joe Biden, government.us_vice_president.to_president, Barack Obama
m.0g9krt9, royalty.chivalric_order_membership.recipient, Joe Biden
Robert Stevenson, film.director.film, Tom Brown's School Days
Joe Biden, people.person.places_lived, m.03pr98t
Ashley Biden, people.person.parents, Joe Biden
Tom Brown's School Days, film.film.genre, Coming of age
m.0pb_gp2, film.personal_film_appearance.person, Joe Biden
Tom Brown's School Days, film.film.starring, m.05v7cgf
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Dramas Based on Classic Literature
m.03pq2qc, people.place_lived.person, Joe Biden
Joe Biden, people.person.profession, Politician
Gene Towne, people.person.nationality, United States of America
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Classic Movies
Literature Subject, freebase.type_hints.included_types, Topic
m.05v7cfl, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, media_common.adaptation.adapted_from, Tom Brown's School Days
2008 Democratic National Convention, base.politicalconventions.political_convention.vice_presidential_nominee, Joe Biden
Joe Biden, government.politician.legislative_committees_served_on, m.02_x99b
Barack Obama, people.person.nationality, United States of America
m.0j31vdq, event.speech_or_presentation.type_or_format_of_presentation, State of the Union
m.04hzwhy, people.place_lived.person, Joe Biden
Newsweek, base.yupgrade.user.topics, Joe Biden
The Teacher Unions: How They Sabotage Educational Reform and Why, book.book.genre, Non-fiction
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Family Drama
United States Senate election in Delaware, 2008, government.election.winner, Joe Biden
Book, freebase.type_profile.strict_included_types, Topic
GeorgeStephanopoulos, base.yupgrade.user.topics, Joe Biden
m.04hzwly, people.marriage.spouse, Joe Biden
Tom Brown's School Days, film.film.film_set_decoration_by, Darrell Silvera
Joe Biden, government.politician.election_campaigns, Joe Biden presidential campaign, 2008
Rugby School, fictional_universe.fictional_setting.works_set_here, Tom Brown's School Days
Left Back: A Century of Failed School Reforms, book.written_work.subjects, United States of America
Joe Biden, government.politician.government_positions_held, m.04s_v0l
Tom Brown's School Days, common.topic.article, m.0466fzw
Joe Biden, people.person.place_of_birth, Scranton
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Dramas Based on the Book
Left Back: A Century of Failed School Reforms, book.written_work.subjects, 20th century
m.04hzwgr, people.sibling_relationship.sibling, Joe Biden
Joe Biden, government.politician.election_campaigns, Joe Biden vice-presidential campaign, 2012
Joe Biden, fictional_universe.person_in_fiction.representations_in_fiction, Joe Biden
Tom Brown's School Days, film.film.genre, Family
White House Situation Room during Operation Neptune's Spear, visual_art.artwork.art_subject, Joe Biden
Joe Biden, people.person.parents, Joseph R. Biden Sr.
Tom Brown's School Days, media_common.adapted_work.adaptations, Tom Brown's School Days
Joe Biden, base.politicalconventions.convention_speaker.conventions_spoken_at, m.04j00l_
Joe Biden, business.board_member.leader_of, m.011s5qnh
Joe Biden, event.public_speaker.speeches_or_presentations, m.05v4mjh
Joe Biden, film.person_or_entity_appearing_in_film.films, m.0n1pgvw
International Campaign Against Terrorism, book.written_work.author, Joe Biden
Tom Brown's School Days, film.film.starring, m.05v7cg6
Joe Biden, people.person.parents, Catherine Eugenia Finnegan
Joe Biden, people.person.places_lived, m.0fpl74d
American Federation of Teachers, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
Joe Biden, book.author.works_written, Strategies for Homeland Defense
m.0d6m0bj, sports.pro_sports_played.athlete, Joe Biden
Left Back: A Century of Failed School Reforms, book.written_work.subjects, History
Catherine Eugenia Finnegan, people.person.children, Joe Biden
Joe Biden, people.person.places_lived, m.03pq2qc
Literature Subject, common.topic.article, m.021y652
m.03l4lnr, education.education.student, Joe Biden
m.05v7cgf, film.performance.film, Tom Brown's School Days
Literature Subject, type.type.expected_by, Subject(s)
m.04hzwh1, people.sibling_relationship.sibling, Joe Biden
Education reform, event.speech_topic.speeches_or_presentations_on_this_topic, m.0j31vdq
Politician, people.profession.people_with_this_profession, Joe Biden
Tom Brown's School Days, film.film.genre, Black-and-white
Joe Biden, visual_art.art_subject.artwork_on_the_subject, White House Situation Room during Operation Neptune's Spear
White people, people.ethnicity.people, Joe Biden
Tom Brown's School Days, film.film.produced_by, Gene Towne
Beau Biden, people.person.parents, Joe Biden
Left Back: A Century of Failed School Reforms, common.topic.article, m.071t783
m.09vj0jk, base.yupgrade.user.topics, Joe Biden
Joe Biden, book.author.works_written, International Campaign Against Terrorism
Left Back: A Century of Failed School Reforms, book.written_work.subjects, American History
Joe Biden, people.person.spouse_s, m.04hzwmt
Ana Marie Cox, base.yupgrade.user.topics, Joe Biden
Joe Biden, government.politician.legislative_committees_served_on, m.02_x99k
Joe Biden, film.person_or_entity_appearing_in_film.films, m.0wzhzlx
Education reform, common.topic.article, m.02mdn
Joe Biden, government.politician.legislative_committees_served_on, m.02_x991
State of the Union, time.recurring_event.instances, 2012 State of the Union Address
Tom Brown's School Days, book.book.genre, School story
Joe Biden, people.person.education, m.04hzwkj
m.04dj0zq, film.performance.film, Tom Brown's School Days
Subjects, type.property.expected_type, Literature Subject
California Proposition 8, base.propositions.proposition.against, Joe Biden
m.0fpwg82, base.popstra.restaurant_choice.diner, Joe Biden
Tom Brown's School Days, film.film.produced_by, C. Graham Baker
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Pre-20th Century Period Pieces
Joe Biden, people.person.education, m.03l4lnr
Joe Biden, government.politician.election_campaigns, Joe Biden presidential campaign, 1988
Tom Brown's School Days, film.film.starring, m.05v7cf6
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Family
Joe Biden, nytimes.topic.uri, top$002Freference$002Ftimestopics$002Fpeople$002Fb$002Fjoseph_r_jr_biden
PERSON TYPE, community.discussion_thread.topic, Joe Biden
Tom Brown's School Days, film.film.genre, Family Drama
m.04dj0zd, film.film_cut.film, Tom Brown's School Days
m.0bwjn90, award.ranking.item, Tom Brown's School Days
Tom Brown's School Days, film.film.subjects, Education reform
Joe Biden, sports.pro_athlete.teams, m.0hpnx72
Tom Brown's School Days, film.film.language, English Language
Joe Biden, government.politician.government_positions_held, m.02_x98m
Joe Biden, base.popstra.celebrity.eats_at, m.0fpwg82
m.04j00l_, base.politicalconventions.convention_speech.speaker, Joe Biden
Left Back: A Century of Failed School Reforms, book.book.editions, Left Back: A Century of Failed School Reforms
Joe Biden, people.person.date_of_birth, 1942-11-20
Joe Biden, base.obamabase.cabinet_member.date_selected, 2008-08-23
Joe Biden, film.person_or_entity_appearing_in_film.films, m.0pb_gp2
Joe Biden, people.person.nationality, United States of America
Tom Brown's School Days, film.film.subjects, Rugby School
Tom Brown's School Days, book.written_work.subjects, Rugby School
m.04hzwkj, education.education.student, Joe Biden
Joe Biden, government.politician.government_positions_held, m.04hzwqx
Literature Subject, type.type.properties, Works Written About This Topic
m.02_x99b, government.legislative_committee_membership.member, Joe Biden
m.09sq912, base.yupgrade.user.topics, Joe Biden
m.04s_v0l, government.government_position_held.office_holder, Joe Biden
Left Back: A Century of Failed School Reforms, book.written_work.author, Diane Ravitch
C. Graham Baker, film.producer.film, Tom Brown's School Days
2012 State of the Union Address, time.event.instance_of_recurring_event, State of the Union
Joe Biden, base.politicalconventions.vice_presidential_nominee.convention_nominated_at, 2008 Democratic National Convention
Joe Biden, people.person.employment_history, m.052n2bm
Joe Biden, book.author.works_written, Political Future of Afghanistan
United States of America, base.biblioness.bibs_topic.is_really, United States of America
Joe Biden presidential campaign, 1988, government.election_campaign.candidate, Joe Biden
Tom Brown's School Days, film.film.starring, m.05v7cgn
Joe Biden presidential campaign, 2008, government.election_campaign.candidate, Joe Biden
Literature Subject, freebase.type_profile.strict_included_types, Topic
m.04dj0zk, film.performance.film, Tom Brown's School Days
Joe Biden, government.politician.party, m.02_x98d
Joe Biden, people.person.ethnicity, White people
Tom Brown's School Days, common.topic.notable_for, g.1256tk41d
m.04wkvd9, celebrities.rivalry.rival, Joe Biden
Joe Biden, people.person.education, m.03l4lnx
Joe Biden, organization.organization_founder.organizations_founded, Biden and Walsh
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Classics
m.09vj0j7, base.yupgrade.user.topics, Joe Biden
m.011s5qnh, organization.leadership.person, Joe Biden
Left Back: A Century of Failed School Reforms, book.book.genre, Non-fiction
Tom Brown's School Days, film.film.starring, m.05v7ch0
m.0cjg0mq, common.webpage.topic, Tom Brown's School Days
Rugby School, book.book_subject.works, Tom Brown's School Days
m.04hzwmt, people.marriage.spouse, Joe Biden
National Education Association, organization.organization.geographic_scope, United States of America
Strategies for Homeland Defense, book.written_work.author, Joe Biden
History, education.field_of_study.subdisciplines, American History
Education reform, common.topic.notable_for, g.1257qk2wd
Gene Towne, film.producer.film, Tom Brown's School Days
Anderson Cooper, base.yupgrade.user.topics, Joe Biden
Joe Biden, film.person_or_entity_appearing_in_film.films, m.011sx3x0
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Drama
Education reform, book.book_subject.works, Left Back: A Century of Failed School Reforms
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.notable_types, Book
Joe Biden, government.politician.election_campaigns, Joe Biden vice-presidential campaign, 2008
Tom Brown's School Days, film.film.starring, m.04dj0zq
Subjects, rdf-schema#range, Literature Subject
m.04hzwqx, government.government_position_held.office_holder, Joe Biden
Diane Ravitch, people.person.nationality, United States of America
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Historical period drama
m.04hzwhc, people.sibling_relationship.sibling, Joe Biden
Joe Biden vice-presidential campaign, 2012, government.election_campaign.candidate, Joe Biden
m.02_x991, government.legislative_committee_membership.member, Joe Biden
Hunter Biden, people.person.parents, Joe Biden
m.05v7cf6, film.performance.film, Tom Brown's School Days
Subjects, type.property.reverse_property, Works Written About This Topic
Joe Biden, government.us_vice_president.vice_president_number, 47
Joe Biden, base.obamabase.cabinet_member.cabinet_position, Vice President of the United States
Film, freebase.type_hints.included_types, Topic
Left Back: A Century of Failed School Reforms, common.topic.notable_for, g.125601r5s
Works Written About This Topic, rdf-schema#domain, Literature Subject
m.09vj0kh, base.yupgrade.user.topics, Joe Biden
Joe Biden, american_football.football_player.position_s, Wide receiver
Tom Brown's School Days, film.film.film_art_direction_by, Van Nest Polglase
Joe Biden, people.person.religion, Catholicism
Education reform, book.book_subject.works, Left Back: A Century of Failed School Reforms
Lawyer, people.profession.people_with_this_profession, Joe Biden
Joe Biden, book.author.works_written, Putin Administration's Policies Toward Non-Russian Regions of the Russian Federation
Putin Administration's Policies Toward Non-Russian Regions of the Russian Federation, book.written_work.author, Joe Biden
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Family Classics
m.07v_4y4, base.yupgrade.user.topics, Joe Biden
Film, freebase.type_profile.published, Published
m.0527kzw, government.government_position_held.appointed_by, Joe Biden
Tom Brown's School Days, common.topic.notable_types, Book
m.05v7cfs, film.performance.film, Tom Brown's School Days
Literature Subject, type.type.expected_by, Subjects
Literature Subject, freebase.type_profile.published, Published
Literature Subject, type.type.expected_by, Subject
m.05x23d5, dataworld.gardening_hint.replaced_by, Joe Biden
m.0j31vdq, event.speech_or_presentation.event, 2012 State of the Union Address
m.05v7cgn, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, fictional_universe.work_of_fiction.setting, Rugby School
The Teacher Unions: How They Sabotage Educational Reform and Why, book.book.editions, The Teacher Unions: How the NEA and AFT Sabotage Reform and Hold Students, Parents, Teachers, and Taxpayers Hostage to Bureaucracy
Tom Brown's School Days, film.film.genre, School story
Joe Biden, user.avh.default_domain.ellerdale_topic.ellerdale_id, 009a-5f30
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.author, Myron Lieberman
m.0fpl74d, people.place_lived.person, Joe Biden
Joe Biden, people.person.children, Hunter Biden
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Classic Dramas
Joe Biden, people.person.gender, Male
Literature Subject, freebase.documented_object.documentation, m.021y652
Van Nest Polglase, people.person.nationality, United States of America
m.05v4mjh, event.speech_or_presentation.speaker_s, Joe Biden
m.0j31vdq, event.speech_or_presentation.speaker_s, Barack Obama
Joe Biden, fictional_universe.fictional_character.based_on, Joe Biden
Joe Biden, book.author.openlibrary_id, OL3506380A
Tom Brown's School Days, film.film.starring, m.05v7cfl
Diane Ravitch, book.author.book_editions_published, Left Back: A Century of Failed School Reforms
United States vice-presidential debate, 2008, base.culturalevent.event.entity_involved, Joe Biden
Joe Biden, government.u_s_congressperson.thomas_id, B000444
Joe Biden, book.author.works_written, Promises to keep
Literature Subject, type.type.expected_by, subjects
Joe Biden, people.person.profession, Lawyer
Barack Obama, event.public_speaker.speeches_or_presentations, m.0j31vdq
Tom Brown's School Days, film.film.starring, m.04dj0zk
Education reform, common.topic.notable_types, Literature Subject
Literature Subject, type.type.expected_by, Related Literature Subjects
Joe Biden, sports.pro_athlete.sports_played_professionally, m.0d6m0bj
Joe Biden, american_football.football_player.position_s, Halfback
m.075_7tf, base.yupgrade.user.topics, Joe Biden
m.0hpnx72, sports.sports_team_roster.player, Joe Biden
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, Education reform
American Federation of Teachers, organization.organization.geographic_scope, United States of America
Books, type.domain.types, Literature Subject
United States of America, base.biblioness.bibs_topic.subsumes, United States of America
Left Back: A Century of Failed School Reforms, common.topic.notable_types, Book
Joe Biden, imdb.topic.name_id, nm0081182
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Movies/TV for ages 11 to 12
m.0vpdd2g, film.personal_film_appearance.person, Joe Biden
Tom Brown's School Days, film.film.runtime, m.04dj0zd
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.notable_for, g.125g1yt_w
m.0j31vdq, event.speech_or_presentation.speech_topic, Education reform
Book, freebase.type_profile.published, Published
Joe Biden, royalty.chivalric_order_member.belongs_to_order, m.0g9krw1
Joe Biden, user.robert.default_domain.daylife.hero_image_id, 05Ic4qp7KV80M
Book, freebase.type_hints.included_types, Topic
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.article, m.0766g9c
Tom Brown's School Days, film.film.genre, Film adaptation
m.0g9krw1, royalty.chivalric_order_membership.recipient, Joe Biden
Irish American, people.ethnicity.people, Joe Biden
Joe Biden, people.person.spouse_s, m.04hzwly
Biden and Walsh, organization.organization.founders, Joe Biden
m.03l4lnx, education.education.student, Joe Biden
2012 State of the Union Address, event.public_speaking_event.speech_presentation_discussion, m.0j31vdq
Scranton, location.location.people_born_here, Joe Biden
Education reform, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
Barack Obama, government.us_president.vice_president, Joe Biden
Education reform, film.film_subject.films, Tom Brown's School Days
Tom Brown's School Days, film.film.written_by, Gene Towne
National Education Association, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
Joe Biden, people.person.sibling_s, m.04hzwgr
Film, freebase.type_profile.strict_included_types, Topic
Promises to keep, book.written_work.author, Joe Biden
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education
g.11b8cfq9yc, education.education.student, Joe Biden
Literature Subject, freebase.type_profile.kind, Role
Tom Brown's School Days, film.film.genre, Historical period drama
Tom Brown's School Days, common.topic.notable_types, Film
m.05v7chd, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, award.ranked_item.appears_in_ranked_lists, m.0bwjn90
Education reform, base.schemastaging.context_name.pronunciation, g.125_rjf_8
Joe Biden, people.person.sibling_s, m.04hzwhc
Diane Ravitch, book.author.works_written, Left Back: A Century of Failed School Reforms
Good Morning America, base.yupgrade.user.topics, Joe Biden
American History, education.field_of_study.subdiscipline_of, History
m.0wzhzlx, film.personal_film_appearance.person, Joe Biden
Joe Biden, people.person.ethnicity, Irish American
United States presidential election debates, 2012, time.event.people_involved, Joe Biden
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Movies for ages 11 to 12
Tom Brown's School Days, film.film.genre, Drama
m.06h_8hr, base.yupgrade.user.topics, Joe Biden
Joe Biden, people.person.height_meters, 1.83
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Dramas based on classic literature
m.0qm9j83, dataworld.gardening_hint.last_referenced_by, Joe Biden
m.02_x99k, government.legislative_committee_membership.member, Joe Biden
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education in the United States
Joe Biden, royalty.chivalric_order_member.belongs_to_order, m.0g9krt9
Joe Biden vice-presidential campaign, 2008, government.election_campaign.candidate, Joe Biden
m.05v7cg6, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, book.written_work.original_language, English Language
Left Back: A Century of Failed School Reforms, book.written_work.subjects, United States of America
Joe Biden, celebrities.celebrity.celebrity_rivals, m.04wkvd9
m.09vj0k5, base.yupgrade.user.topics, Joe Biden
m.0j31vdq, event.speech_or_presentation.speech_topic, Energy development
C. Graham Baker, people.person.nationality, United States of America
m.07y4vlv, base.yupgrade.user.topics, Joe Biden
Joseph R. Biden Sr., people.person.children, Joe Biden
m.052n2bm, business.employment_tenure.person, Joe Biden
Works Written About This Topic, type.property.master_property, Subjects
m.09vj0kt, base.yupgrade.user.topics, Joe Biden
Joe Biden, film.person_or_entity_appearing_in_film.films, m.0vpdd2g
Subjects, owl#inverseOf, Works Written About This Topic
Tom Brown's School Days, common.topic.webpage, m.0cjg0mq
m.07y524n, base.yupgrade.user.topics, Joe Biden
Tom Brown's School Days, film.film.starring, m.05v7cfs
Joe Biden, american_football.football_player.position_s, Defensive back
Joe Biden, government.political_appointer.appointees, m.0527kzw
Barack Obama 2009 presidential inauguration, base.culturalevent.event.entity_involved, Joe Biden
Naomi Biden, people.person.parents, Joe Biden
Tom Brown's School Days, film.film.country, United States of America
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Ages 11-12
Books, type.domain.types, Book
Energy development, event.speech_topic.speeches_or_presentations_on_this_topic, m.0j31vdq
Tom Brown's School Days, film.film.directed_by, Robert Stevenson
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education reform
Joe Biden, people.person.education, g.11b8cfq9yc
Political Future of Afghanistan, book.written_work.author, Joe Biden
United States of America, people.person.nationality, Joe Biden
Joe Biden, people.person.sibling_s, m.04hzwh1
Rugby School, film.film_subject.films, Tom Brown's School Days
m.011sx3x0, film.personal_film_appearance.person, Joe Biden
State of the Union, event.type_of_public_presentation.presentations_of_this_type, m.0j31vdq
Joe Biden, base.propositions.proposition_issue.against, California Proposition 8
Literature Subject, type.type.domain, Books
Gene Towne, film.writer.film, Tom Brown's School Days
Book, type.type.domain, Books
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, National Education Association
m.09sq8_9, base.yupgrade.user.topics, Joe Biden
Joe Biden, people.person.employment_history, m.052n2bt
Works Written About This Topic, type.property.schema, Literature Subject
m.052n2bt, business.employment_tenure.person, Joe Biden
m.02_x98d, government.political_party_tenure.politician, Joe Biden

Answer: Joe Biden