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 was the Vice-President to the President in the White House in 2012? 
Knowledge Triplets: George H. W. Bush, government.us_vice_president.to_president, Ronald Reagan
m.0w_l1x3, award.award_honor.ceremony, 2007 White House  East Room Ceremony
Joe Biden, government.politician.election_campaigns, Joe Biden vice-presidential campaign, 2008
2006 White House East Room Ceremony, common.topic.notable_for, g.11b5m3t8j7
White House, common.topic.webpage, m.09y8ps9
m.09ygy8z, common.webpage.topic, White House
White House, book.book_subject.works, Real Life at the White House: 200 Years of Daily Life at America's Most Famous Residence
m.0b47nw3, common.webpage.topic, White House
White House, location.location.contains, West Wing
White House, common.topic.webpage, m.09ydyhg
m.0b47frl, common.webpage.resource, Jon Stewart on White House Budget Director Peter Orszag’s “Magnetic Machismo”
m.075r0vn, award.award_honor.ceremony, 1988 White House Ceremony
The White House Mess, common.topic.notable_for, g.1258b_y3w
Joe Biden, government.politician.election_campaigns, Joe Biden vice-presidential campaign, 2012
2008 White House East Room Ceremony, common.topic.notable_for, g.11b5m25n3p
1988 White House Ceremony, time.event.locations, White House
m.09xz0tf, common.webpage.topic, White House
White House, location.location.contains, East Wing
The White House: Behind Closed Doors, tv.tv_program.original_network, m.0jvmfzw
White House, common.topic.article, m.081t0
Joe Biden, government.us_vice_president.vice_president_number, 47
White House, common.topic.webpage, m.09ygy8z
White House, common.topic.webpage, m.0b465d5
White House, architecture.building.occupant, m.0dfzl7m
m.075r0z6, award.award_honor.ceremony, 1988 White House Ceremony
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0y_
White House, common.topic.webpage, m.0b48s0j
m.075r4f2, award.award_honor.ceremony, 2007 White House  East Room Ceremony
White House, business.employer.employees, m.012f0zpf
The White House Mess, common.topic.notable_types, Book
White House, common.topic.webpage, m.0b48qkx
Philip D. Zelikow, book.author.works_edited, The Kennedy Tapes: Inside the White House during the Cuban Missile Crisis
White House, common.topic.webpage, m.09y7xcn
White House, location.location.events, 1988 White House Ceremony
m.09y8ps9, common.webpage.topic, White House
m.075r4fn, award.award_honor.ceremony, 2007 White House  East Room Ceremony
m.09y5h69, common.webpage.topic, White House
m.075r4g4, award.award_honor.ceremony, 2008 White House East Room Ceremony
m.0b48s0j, common.webpage.resource, White House Welcomes Country Stars Alison Krauss, Brad Paisley… and Sal LaRosa
Jon Stewart on White House Budget Director Peter Orszag’s “Magnetic Machismo”, common.resource.annotations, m.0b47frl
White House, location.location.events, Harry S. Truman 1945 presidential inauguration
Library, location.location.containedby, White House
Bill Clinton, people.person.profession, Author
White House, common.topic.webpage, m.09xs52j
White House, common.topic.webpage, m.09x58_n
John F. Kennedy, book.book_subject.works, The Kennedy Tapes: Inside the White House during the Cuban Missile Crisis
White House, common.topic.webpage, m.09y8jtq
The White House Mess, book.written_work.author, Christopher Buckley
1992 White House Ceremony, time.event.locations, White House
Joe Biden, base.politicalconventions.vice_presidential_nominee.convention_nominated_at, 2008 Democratic National Convention
m.075r0yb, award.award_honor.ceremony, 1988 White House Ceremony
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0xm
White House, common.topic.image, White House
m.075r4dl, award.award_honor.ceremony, 2007 White House  East Room Ceremony
m.09xs52j, common.webpage.topic, White House
m.075r4hc, award.award_honor.ceremony, 2008 White House East Room Ceremony
Jennifer Hudson to sing at White House state dinner, common.resource.annotations, m.09x4yxm
The White House Mess, book.book.editions, The White House mess
White House, common.topic.webpage, m.09yy351
Elisabeth Hasselbeck Watch: The 'Bot vs. the White House and Melissa Etheridge, common.resource.annotations, m.09y7x90
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0z6
m.075r4db, award.award_honor.ceremony, 2007 White House  East Room Ceremony
The White House Mess, book.book.editions, The White House Mess
m.075r1f9, award.award_honor.ceremony, 1992 White House Ceremony
m.075r1db, award.award_honor.ceremony, 1992 White House Ceremony
White House, location.location.events, 2011 White House shooting
m.09x45p3, common.webpage.topic, White House
m.07nf_y4, base.ontologies.ontology_instance_mapping.freebase_topic, White House
m.075r0x1, award.award_honor.ceremony, 1988 White House Ceremony
Franklin D. Roosevelt 1945 presidential inauguration, time.event.locations, White House
2007 White House  East Room Ceremony, common.topic.notable_for, g.11b5m17159
m.09ydyhg, common.webpage.topic, White House
m.09xrhs5, common.webpage.topic, White House
m.075r0r7, award.award_honor.ceremony, 1987 White House Ceremony
United States presidential election debates, 2012, time.event.people_involved, Joe Biden
m.09yy351, common.webpage.topic, White House
m.075r0xm, award.award_honor.ceremony, 1988 White House Ceremony
m.0djzvk7, award.ranking.item, White House
m.0b48qkx, common.webpage.topic, White House
m.075r4b5, award.award_honor.ceremony, 2006 White House East Room Ceremony
m.075r4cm, award.award_honor.ceremony, 2007 White House  East Room Ceremony
m.075r1d2, award.award_honor.ceremony, 1992 White House Ceremony
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0xw
m.075r0y2, award.award_honor.ceremony, 1988 White House Ceremony
m.0b48s40, common.webpage.topic, White House
White House (Washington, D.C.), base.skosbase.skos_concept.broader, Presidents--Dwellings--Washington (D.C.)
m.075r4by, award.award_honor.ceremony, 2007 White House  East Room Ceremony
White House, common.topic.webpage, m.0b46l12
White House, location.location.events, Franklin D. Roosevelt 1945 presidential inauguration
1988 White House Ceremony, common.topic.notable_for, g.11b5lrrn8q
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0yb
The White House: Behind Closed Doors, common.topic.article, m.04zwjx8
m.0b499f9, common.webpage.topic, White House
m.0b465d5, common.webpage.topic, White House
m.075r4bf, award.award_honor.ceremony, 2006 White House East Room Ceremony
Initial design and construction of White House, common.topic.notable_for, g.1255b7wm6
m.09y7x90, common.webpage.resource, Elisabeth Hasselbeck Watch: The 'Bot vs. the White House and Melissa Etheridge
White House Complex, common.topic.article, m.02pr3sf
White House, common.topic.webpage, m.09wfw86
White House, common.topic.webpage, m.09xrhs5
White House, common.topic.webpage, m.0fpsmhn
m.0fpsmhn, common.webpage.topic, White House
m.075r1sr, award.award_honor.ceremony, 2000 White House East Room Ceremony
m.075r1w0, award.award_honor.ceremony, 2000 White House East Room Ceremony
m.0b48s40, common.webpage.resource, Live-Tweeting the White House Country Showdown!
White House, common.topic.webpage, m.09x4tl7
Joe Biden, government.us_vice_president.to_president, Barack Obama
m.0b465d5, common.webpage.resource, “Iron Chef America”: Super Chef Battle with Michelle Obama and White House Chef Cristeta Comerford
White House, business.employer.employees, m.0zgj7vh
Real Life at the White House: 200 Years of Daily Life at America's Most Famous Residence, book.written_work.author, Claire Whitcomb
White House, common.image.size, m.0291wtq
White House, architecture.building.occupant, m.0dfzl8d
m.075r4cw, award.award_honor.ceremony, 2007 White House  East Room Ceremony
White House, location.location.contains, Red Room
Franklin D. Roosevelt, government.us_president.vice_president, Harry S. Truman
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0yk
Julia Dent Cantacuzène Spiransky-Grant, people.person.place_of_birth, White House
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0wl
The White House: Behind Closed Doors, common.topic.notable_for, g.1254zzswt
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0wc
m.09xgzqm, common.webpage.topic, White House
m.075r0xc, award.award_honor.ceremony, 1988 White House Ceremony
m.04s_v0l, government.government_position_held.office_holder, Joe Biden
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0ys
Red Room, location.location.containedby, White House
White House, book.book_subject.works, The Kennedy Tapes: Inside the White House during the Cuban Missile Crisis
White House, common.topic.webpage, m.09y7x90
White House, common.topic.webpage, m.09xl98j
Dwight D. Eisenhower, people.person.nationality, United States of America
Ronald Reagan 1985 presidential inauguration, time.event.locations, White House
Joe Biden vice-presidential campaign, 2012, government.election_campaign.candidate, Joe Biden
m.075r0y_, award.award_honor.ceremony, 1988 White House Ceremony
White House, architecture.building.occupant, m.0dfzl7x
James Hoban, common.topic.image, James Hoban White House Progress Drawing
White House Complex, location.location.contains, Executive Residence
White House, common.topic.webpage, m.09x45p3
m.0b465hb, common.webpage.topic, White House
North Façade White House, common.image.appears_in_topic_gallery, White House
m.075rx58, award.award_honor.ceremony, 2008 White House East Room Ceremony
m.09w86b3, common.webpage.topic, White House
2005 White House East Room Ceremony, common.topic.notable_for, g.11b5lzz64w
m.075r4bp, award.award_honor.ceremony, 2007 White House  East Room Ceremony
1992 White House Ceremony, common.topic.notable_for, g.11b5lz5syj
m.0j6qcl4, common.webpage.resource, Whitehouse.gov
m.075r49v, award.award_honor.ceremony, 2006 White House East Room Ceremony
m.09xvs14, common.webpage.topic, White House
m.0b48s0j, common.webpage.topic, White House
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0x1
White House, common.topic.webpage, m.09xvs14
m.075r0vf, award.award_honor.ceremony, 1988 White House Ceremony
The White House: Behind Closed Doors, tv.tv_program.filming_locations, Oval Office
2002 White House East Room Ceremony, common.topic.notable_for, g.11b5lxn9sp
White House Complex, common.topic.notable_for, g.1256g3s9d
White House, common.topic.webpage, m.09y461n
George H. W. Bush, people.person.nationality, United States of America
White House, common.topic.webpage, m.09wyy_7
m.075r0wc, award.award_honor.ceremony, 1988 White House Ceremony
m.09y8jtq, common.webpage.topic, White House
2008 Democratic National Convention, base.politicalconventions.political_convention.vice_presidential_nominee, Joe Biden
m.09y7xcn, common.webpage.topic, White House
m.075r0_4, award.award_honor.ceremony, 1989 White House Ceremony
m.075r1dl, award.award_honor.ceremony, 1992 White House Ceremony
m.075r0zf, award.award_honor.ceremony, 1988 White House Ceremony
m.09y461n, common.webpage.topic, White House
m.09wfzrk, common.webpage.topic, White House
White House, location.location.events, Barack Obama 2013 presidential inauguration
White House, common.topic.webpage, m.09ysqdf
Joe Biden, government.politician.party, m.02_x98d
m.075r4c5, award.award_honor.ceremony, 2007 White House  East Room Ceremony
James Hoban, architecture.architect.structures_designed, White House (2)
White House, location.location.events, Dwight D. Eisenhower 1957 presidential inauguration
m.075r4d3, award.award_honor.ceremony, 2007 White House  East Room Ceremony
m.09x4yxm, common.webpage.resource, Jennifer Hudson to sing at White House state dinner
White House, common.topic.image, North Façade White House
Library, common.topic.image, White House ground floor. The Map Room is the squarish room to the left of the oval Diplomatic Reception Room
m.075r0vx, award.award_honor.ceremony, 1988 White House Ceremony
White House Complex, common.topic.notable_types, Location
White House, common.topic.webpage, m.09yrrcj
m.0b48xl7, common.webpage.topic, White House
m.09x4tl7, common.webpage.topic, White House
White House, book.book_subject.works, The White House Mess
m.075r11h, award.award_honor.ceremony, 1989 White House Ceremony
The Kennedy Tapes: Inside the White House during the Cuban Missile Crisis, book.written_work.subjects, John F. Kennedy
m.09xkby3, common.webpage.topic, White House
m.075r0wl, award.award_honor.ceremony, 1988 White House Ceremony
Real Life at the White House: 200 Years of Daily Life at America's Most Famous Residence, book.written_work.author, John Whitcomb
The White House: Behind Closed Doors, tv.tv_program.languages, English Language
White House, common.topic.webpage, m.09wfzrk
m.075r0zn, award.award_honor.ceremony, 1988 White House Ceremony
White House, common.topic.webpage, m.0b45tfq
White House Welcomes Country Stars Alison Krauss, Brad Paisley… and Sal LaRosa, common.resource.annotations, m.0b48s0j
Whitehouse.gov, common.resource.annotations, m.0j6qcl4
White House, common.topic.webpage, m.0b465hb
m.0b46l12, common.webpage.topic, White House
1990 White House East Room Ceremony, common.topic.notable_for, g.11b5m39c9t
Christopher Buckley, book.author.works_written, The White House Mess
White House, location.location.containedby, Washington, D.C.
White House, common.topic.webpage, m.0j6qcl4
Ronald Reagan, people.person.nationality, United States of America
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0vx
White House, common.image.appears_in_topic_gallery, Initial design and construction of White House
White House, common.topic.webpage, m.0b47nw3
White House, common.topic.webpage, m.0b48xl7
White House, common.topic.webpage, m.0b466yk
White House, common.topic.webpage, m.09y5h69
White House, common.topic.webpage, m.09y83yq
m.075r1t6, award.award_honor.ceremony, 2000 White House East Room Ceremony
The White House: Behind Closed Doors, film.film.runtime, m.0h10w26
m.09xl98j, common.webpage.topic, White House
1989 White House Ceremony, common.topic.notable_for, g.11b5m12wfd
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0wt
m.09wfw86, common.webpage.topic, White House
Joe Biden, government.u_s_congressperson.thomas_id, B000444
White House (Washington, D.C.), base.skosbase.skos_concept.equivalent_topic, White House
White House, location.location.geolocation, m.02nzy61
Esther Cleveland, people.person.place_of_birth, White House
White House, location.location.containedby, United States of America
m.075r0yk, award.award_honor.ceremony, 1988 White House Ceremony
1989 White House Ceremony, freebase.valuenotation.is_reviewed, Start date
m.0b48pgq, common.webpage.topic, White House
White House (Washington, D.C.), base.skosbase.skos_concept.in_scheme, Corporate Names Concept Scheme
United States vice-presidential debate, 2008, base.culturalevent.event.entity_involved, Joe Biden
Joe Biden, government.political_appointer.appointees, m.0527kzw
m.0b47frl, common.webpage.topic, White House
m.0w_l1vz, award.award_honor.ceremony, 2007 White House  East Room Ceremony
White House, common.topic.webpage, m.0b47frl
White House, location.location.people_born_here, Julia Dent Cantacuzène Spiransky-Grant
The White House: Behind Closed Doors, tv.tv_program.filming_locations, White House
m.075r4dv, award.award_honor.ceremony, 2007 White House  East Room Ceremony
1989 White House Ceremony, freebase.valuenotation.is_reviewed, Location(s)
Joe Biden, base.obamabase.cabinet_member.date_selected, 2008-08-23
Ronald Reagan, government.us_president.vice_president, George H. W. Bush
1987 White House Ceremony, common.topic.notable_for, g.11b5m3469n
White House, business.employer.employees, g.11b7_rkv70
Live-Tweeting the White House Country Showdown!, common.resource.annotations, m.0b48s40
Barack Obama 2013 presidential inauguration, common.topic.notable_for, g.1yl5p6qb3
m.075r0xw, award.award_honor.ceremony, 1988 White House Ceremony
1999 White House East Room Ceremony, common.topic.notable_for, g.11b5lrbnmy
m.09x58_n, common.webpage.topic, White House
Barack Obama, people.person.nationality, United States of America
White House, common.image.appears_in_topic_gallery, White House
m.0b45tfq, common.webpage.topic, White House
m.09y83yq, common.webpage.topic, White House
Barack Obama, government.us_president.vice_president, Joe Biden
m.0b48qkx, common.webpage.resource, Gates, Crowley and Obama: A Beer at the White House?
White House Complex, common.topic.image, White-house-1984-overview-nw
White House, location.location.contains, Library
m.075r118, award.award_honor.ceremony, 1989 White House Ceremony
White House, book.book_subject.works, This Time, This Place: My Life in War, the White House, and Hollywood
White House, common.topic.notable_types, House
White House, location.location.events, Gerald Ford 1974 presidential inauguration
Lou Dobbs considers run for White House or U.S. Senate: report, common.resource.annotations, m.09x4tl7
Barack Obama 2013 presidential inauguration, time.event.locations, White House
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0vn
m.09x4tl7, common.webpage.resource, Lou Dobbs considers run for White House or U.S. Senate: report
Harry S. Truman, government.us_vice_president.to_president, Franklin D. Roosevelt
Barack Obama, people.person.profession, Author
White House, location.location.events, Ronald Reagan 1985 presidential inauguration
Gates, Crowley and Obama: A Beer at the White House?, common.resource.annotations, m.0b48qkx
m.09x4yxm, common.webpage.topic, White House
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0y2
m.075r4fx, award.award_honor.ceremony, 2007 White House  East Room Ceremony
m.075r11_, award.award_honor.ceremony, 1989 White House Ceremony
m.075r111, award.award_honor.ceremony, 1989 White House Ceremony
United States of America, people.person.nationality, Joe Biden
m.05168xz, exhibitions.exhibition_run.venue, White House
1989 White House Ceremony, time.event.locations, White House
Gerald Ford 1974 presidential inauguration, time.event.locations, White House
White House, common.topic.webpage, m.09xkby3
White House, common.topic.webpage, m.0b48s40
m.075r0wt, award.award_honor.ceremony, 1988 White House Ceremony
The Kennedy Tapes: Inside the White House during the Cuban Missile Crisis, book.written_work.subjects, White House
m.09y7x90, common.webpage.topic, White House
Ernest May, book.author.works_edited, The Kennedy Tapes: Inside the White House during the Cuban Missile Crisis
The White House Mess, common.topic.article, m.06vwj58
White House, architecture.building.occupant, m.0dfzl84
m.09ysqdf, common.webpage.topic, White House
White House, common.topic.webpage, m.09x5k7h
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0xc
White House, location.location.street_address, m.07y5brl
Real Life at the White House: 200 Years of Daily Life at America's Most Famous Residence, common.topic.notable_for, g.125ffnpjr
m.0w_l2h1, award.award_honor.ceremony, 2007 White House  East Room Ceremony
m.02_x98m, government.government_position_held.office_holder, Joe Biden
White House, tv.tv_subject.tv_programs, The White House: Behind Closed Doors
The White House: Behind Closed Doors, tv.tv_program.subjects, White House
White House, common.topic.webpage, m.09w86b3
White House, location.location.people_born_here, Francis Bowes Sayre, Jr.
m.052b5s0, award.award_honor.ceremony, 2000 White House East Room Ceremony
m.075r4gw, award.award_honor.ceremony, 2008 White House East Room Ceremony
m.075r4cd, award.award_honor.ceremony, 2007 White House  East Room Ceremony
White House, common.topic.notable_for, g.125fky6kc
White House, common.topic.webpage, m.0b48pgq
m.075r11r, award.award_honor.ceremony, 1989 White House Ceremony
m.0j6qcl4, common.webpage.topic, White House
The White House Mess, book.written_work.subjects, White House
m.075r0w3, award.award_honor.ceremony, 1988 White House Ceremony
White House, location.location.containedby, White House Complex
m.0704p7d, award.award_honor.ceremony, 2007 White House  East Room Ceremony
Joe Biden vice-presidential campaign, 2008, government.election_campaign.candidate, Joe Biden
m.052b29d, award.award_honor.ceremony, 1988 White House Ceremony
m.075r1ty, award.award_honor.ceremony, 2000 White House East Room Ceremony
m.075rwlt, award.award_honor.ceremony, 2008 White House East Room Ceremony
White House, common.topic.webpage, m.09xgzqm
2011 White House shooting, time.event.locations, White House
m.075r4gm, award.award_honor.ceremony, 2008 White House East Room Ceremony
m.075r4h3, award.award_honor.ceremony, 2008 White House East Room Ceremony
Red Room, common.topic.image, White-house-floor1-red-room
m.075r162, award.award_honor.ceremony, 1990 White House East Room Ceremony
m.075r0ys, award.award_honor.ceremony, 1988 White House Ceremony
Harry S. Truman 1945 presidential inauguration, time.event.locations, White House
1989 White House Ceremony, freebase.valuenotation.is_reviewed, End date
m.09x5k7h, common.webpage.topic, White House
1988 White House Ceremony, award.award_ceremony.awards_presented, m.052b29d
White House, architecture.structure.architect, James Hoban
m.0b466yk, common.webpage.topic, White House
m.09wyy_7, common.webpage.topic, White House
White House, award.ranked_item.appears_in_ranked_lists, m.0djzvk7
White House, common.topic.webpage, m.09x4yxm
White House, location.location.people_born_here, Esther Cleveland
White House, common.topic.webpage, m.0b499f9
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0zn
White House, architecture.building.occupant, m.0dfzl4x
m.075r1tp, award.award_honor.ceremony, 2000 White House East Room Ceremony
White House, architecture.building.building_function, Office
Francis Bowes Sayre, Jr., people.person.place_of_birth, White House
The White House Mess, book.book.genre, Fiction
White House, business.employer.employees, m.0znlkbs
The White House Mess, book.book.genre, Novel
The White House is busy... watching '24', common.resource.annotations, m.09xkby3
m.075r103, award.award_honor.ceremony, 1989 White House Ceremony
James Hoban, architecture.architect.structures_designed, White House
Bill Clinton, people.person.nationality, United States of America
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0zf
White House, location.location.containedby, United States of America
White House, base.ontologies.ontology_instance.equivalent_instances, m.07nf_y4
m.075r1f1, award.award_honor.ceremony, 1992 White House Ceremony
2000 White House East Room Ceremony, common.topic.notable_for, g.11b5m6s65y
m.09yrrcj, common.webpage.topic, White House
The White House Mess, book.written_work.subjects, Politics of the United States
1988 White House Ceremony, award.award_ceremony.awards_presented, m.075r0w3
White House, base.skosbase.vocabulary_equivalent_topic.equivalent_concept, White House (Washington, D.C.)
Dwight D. Eisenhower 1957 presidential inauguration, time.event.locations, White House
White House, common.topic.webpage, m.09xz0tf
Joe Biden, base.obamabase.cabinet_member.cabinet_position, Vice President of the United States

Answer: Joe Biden