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 government position was held by Barack Obama before he held office and is a office position that has existed since 1789.? 
Knowledge Triplets: Barack Obama, people.person.children, Malia Ann Obama
Barack Obama and the Jim Crow Media, common.topic.article, m.0gy2v41
m.0w8v5d0, government.government_position_held.appointed_by, Barack Obama
m.05v3kv0, government.government_position_held.appointed_by, Barack Obama
Barack Obama, Sr., people.person.ethnicity, Arabs
Barack Obama, common.topic.image, Barack Obama Senate Portrait
Barack Obama, government.political_appointer.appointees, m.052m8b1
Barack Obama, government.political_appointer.appointees, m.0tm2t1f
Barack Obama, government.political_appointer.appointees, m.05bh_yd
Barack Obama, government.government_position_held.office_holder, m.03h9hn4
Barack Obama, Sr., common.topic.article, m.03qccxn
Barack Obama, Sr., people.person.children, Bernard Obama
m.04s_x47, people.place_lived.person, Barack Obama
Barack Obama, people.person.education, m.0nbyhqc
Barack Obama, government.political_appointer.appointees, m.0jtmkth
m.0ccfkl4, people.place_lived.person, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0k9_4xg
Barack Obama in comics, common.topic.article, m.05f34xx
Barack Obama, government.political_appointer.appointees, m.05pv1bq
Barack Obama, government.political_appointer.appointees, m.05bh_ms
m.01282ptc, military.military_command.military_commander, Barack Obama
m.0tlzpxk, government.government_position_held.appointed_by, Barack Obama
Barack Obama, Sr., people.person.religion, Islam
Barack Obama, government.political_appointer.appointees, m.09vkg_2
m.010g2x8g, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0jb89c0
President Barack Obama and the Message Beyond the Photograph, common.topic.subjects, Democracy
Barack Obama, people.person.profession, Politician
m.0glx1wx, government.government_position_held.appointed_by, Barack Obama
m.0znj0g4, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0v4q6n5
Barack Obama, people.person.education, m.012l94sv
m.05bp2yr, government.government_position_held.appointed_by, Barack Obama
m.05gwyg2, government.government_position_held.appointed_by, Barack Obama
Family of Barack Obama, common.topic.webpage, m.0b49520
Barack Obama, government.political_appointer.appointees, m.0w8v5d0
Barack Obama, people.person.sibling_s, m.0n4sqkd
Barack Obama, government.political_appointer.appointees, m.05v3kv0
Official portrait of Barack Obama, common.image.size, m.059x9bc
m.0r5y214, government.government_position_held.appointed_by, Barack Obama
m.0b497ny, common.webpage.topic, Family of Barack Obama
Barack Obama, people.person.quotations, Yes we can!
Barack Obama, book.book_subject.works, Barack H. Obama: The Unauthorized Biography
Barack Obama, government.politician.election_campaigns, Barack Obama 2004 US Senate Campaign
Barack Obama, people.person.education, m.012m4x3m
Barack Obama, common.topic.notable_for, g.1258j10lr
Barack Obama Extends Historical Legacy \"Astride the Promise of Change\", book.written_work.original_language, American English
Barack Obama, common.topic.article, m.09s453y
m.04_2vlm, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.sibling_s, m.0kv53fr
m.03gjhww, government.political_party_tenure.politician, Barack Obama
BarackObama, internet.blog.blogger, Barack Obama
Barack Obama in His Own Words, common.topic.notable_types, Book Edition
Barack Obama, government.political_appointer.appointees, m.0k9_61x
Barack Obama, government.political_appointer.appointees, m.010g2x8g
Barack Obama, people.person.places_lived, m.0ccfkl4
Barack Obama in His Own Words, book.book_edition.binding, Paperback
Barack Obama, government.political_appointer.appointees, m.010p3jbd
m.05bh_yd, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0wkxqyy
m.05g2cp1, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.ethnicity, English American
Barack Obama, people.person.profession, Author
m.03h9hn4, government.government_position_held.office_position_or_title, United States Senator
Barack Obama, military.military_commander.military_commands, m.0125s1f9
Barack Obama, book.book_subject.works, Yes We Can: A Biography of President Barack Obama
Barack Obama, government.political_appointer.appointees, m.0jtl_wm
m.05bj120, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.profession, Law professor
Family of Barack Obama, common.topic.webpage, m.0b497ny
m.010hc1p6, government.government_position_held.appointed_by, Barack Obama
Barack Obama in His Own Words, common.topic.notable_types, Book
Barack Obama, government.political_appointer.appointees, m.0q4ng3y
Barack Obama, people.person.nationality, United States of America
James L. Jones, base.obamabase.cabinet_member.cabinet_position, National Security Advisor
Barack Obama, government.politician.election_campaigns, Barack Obama presidential campaign, 2012
Barack Obama in His Own Words, book.book_edition.place_of_publication, New York City
Barack Obama, Sr., people.person.profession, Economist
m.012m4x3m, education.education.student, Barack Obama
Barack Obama Extends Historical Legacy \"Astride the Promise of Change\", book.written_work.subjects, United States of America
Barack Obama, government.political_appointer.appointees, m.05bhs1w
Barack Obama, people.person.places_lived, m.05gmrjl
Barack Obama, government.political_appointer.appointees, m.04_5kfv
Barack Obama, people.person.ethnicity, Irish American
Barack Obama Extends Historical Legacy \"Astride the Promise of Change\", book.written_work.subjects, Contemporary history
Barack Obama, government.us_president.vice_president, Joe Biden
Barack Obama, book.author.works_written, La audacia de la esperanza
Barack Obama, government.political_appointer.appointees, m.0q4lvc7
Barack Obama, government.political_appointer.appointees, m.010g2c43
Barack Obama, common.image.appears_in_topic_gallery, Barack Obama
Barack Obama presidential campaign, 2012, government.election_campaign.election, United States Presidential Election 2012
m.0nd7wz9, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.religion, Christianity
Barack Obama, freebase.valuenotation.is_reviewed, Official name
Barack Obama, people.person.education, m.012m9zwm
Barack Obama, government.political_appointer.appointees, m.05bh_20
Barack Obama, people.person.parents, Ann Dunham
Barack Obama: People's President, film.film.country, United States of America
Barack Obama, people.person.ethnicity, Kenyan American
Barack Obama, government.political_appointer.appointees, m.05gh7qx
Barack Obama, government.politician.election_campaigns, Barack Obama presidential primary campaign, 2008
Barack Obama, people.person.education, m.02nqgmw
m.0q4ng3y, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05g438r
Barack Obama, people.person.places_lived, m.03xdty5
Barack Obama \"Hope\" poster, common.topic.article, m.05c3l5f
Barack Obama, government.political_appointer.appointees, m.05g5040
m.02nqgsc, business.employment_tenure.person, Barack Obama
Barack Obama, people.person.sibling_s, m.0kv53ff
m.05bht4v, government.government_position_held.appointed_by, Barack Obama
Barack Obama, Sr., people.person.education, m.04hg7h5
m.0r60ybv, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0znj0g4
Barack Obama 2004 US Senate Campaign, government.election_campaign.candidate, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0k9_6d4
Barack Obama, people.person.education, m.0nbyhy_
m.0wkxqyy, government.government_position_held.appointed_by, Barack Obama
m.0j35vth, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.052lwd3
Barack Obama Extends Historical Legacy \"Astride the Promise of Change\", book.written_work.author, Aberjhani
Barack Obama, people.person.gender, Male
m.0gnp1_s, common.webpage.resource, President Barack Obama and the Message Beyond the Photograph
m.0jb89c0, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0zrhnnr
Barack Obama, government.political_appointer.appointees, m.05bj120
m.0jtl_wm, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05ftbw9
Barack Obama, government.political_appointer.appointees, m.010qyt8y
Barack Obama, government.political_appointer.appointees, m.05bh_5w
m.0wzl8h_, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.education, m.012m11bj
Official portrait of Barack Obama, common.image.appears_in_topic_gallery, President of the United States
President Barack Obama and the Message Beyond the Photograph, book.written_work.subjects, Government
Barack Obama, people.person.education, m.012m6w18
Barack Obama presidential campaign, 2012, government.election_campaign.party, Democratic Party
m.04wrwjv, base.firsts.first_achievement.first, Barack Obama
m.03h9hp_, government.legislative_committee_membership.member, Barack Obama
m.0tm2t1f, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05f_33k
Barack Obama, common.image.size, m.0klz8m
Barack Obama, freebase.valuenotation.is_reviewed, Children
m.09rg1bz, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.politician.election_campaigns, Barack Obama 1996 Illinois Senate Campaign
Barack Obama, Sr., people.person.spouse_s, m.040fvqp
Barack Obama in His Own Words, book.book.editions, Barack Obama in His Own Words
Barack Obama, book.book_subject.works, A Bound Man
Barack Obama, Sr., people.person.spouse_s, m.0j4l4y8
m.012l94sv, education.education.student, Barack Obama
m.04_5lb8, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.sibling_s, m.0n4sqkk
Barack Obama, freebase.valuenotation.is_reviewed, Country of nationality
Barack Obama, Sr., people.person.children, George Obama
Barack Obama, people.person.places_lived, m.03xdtyk
Barack Obama, people.person.profession, Lawyer
m.05nd5t7, government.government_position_held.appointed_by, Barack Obama
Barack Obama, Sr., people.person.sibling_s, m.0k6m6kc
Barack H. Obama: The Unauthorized Biography, common.topic.notable_for, g.125f8s1ny
m.05bh__x, government.government_position_held.appointed_by, Barack Obama
m.0jtlxf_, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.07nt04k
m.0w2cph_, government.government_position_held.appointed_by, Barack Obama
m.02nqgqh, business.employment_tenure.person, Barack Obama
Barack Obama, people.person.places_lived, m.03xdtyc
m.0wzl8x_, government.government_position_held.appointed_by, Barack Obama
m.0w25ghz, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05g2cp1
m.052lwd3, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.profession, Politician
Politician, base.onephylogeny.type_of_thing.things_of_this_type, United States Senator
Barack Obama, Sr., people.person.profession, Politician
m.0v4q6n5, government.government_position_held.appointed_by, Barack Obama
Barack Obama, base.firsts.first.achievements, m.05gmrc3
m.0w63f9q, organization.leadership.person, Barack Obama
Barack Obama, military.military_commander.military_commands, m.012bk5jn
Barack Obama, government.politician.government_positions_held, m.03h96h6
m.04s_2dh, government.government_position_held.office_holder, Barack Obama
Barack Obama, people.person.sibling_s, m.0n4sqk2
m.05ftbw9, government.government_position_held.appointed_by, Barack Obama
Barack Obama in His Own Words, common.topic.notable_for, g.125d3_x15
Barack Obama, government.political_appointer.appointees, m.0118nrhq
m.05gmrjl, people.place_lived.person, Barack Obama
m.05gmrc3, base.firsts.first_achievement.first, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0j35vth
Barack Obama, government.political_appointer.appointees, m.0q4mpmt
m.05pv1bq, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.052mbx6
m.05bj130, government.government_position_held.appointed_by, Barack Obama
Barack Obama, military.military_commander.military_commands, m.0125s3tf
Yes We Can: A Biography of President Barack Obama, common.topic.notable_for, g.125brs5d9
m.05bj0_8, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0jb8k42
Barack Obama, people.person.employment_history, m.02nqgsc
President of the United States, common.topic.image, Official portrait of Barack Obama
m.0q4mpmt, government.government_position_held.appointed_by, Barack Obama
m.0b48wwv, common.webpage.topic, Family of Barack Obama
Barack Obama, people.person.ethnicity, Multiracial American
m.05bh_20, government.government_position_held.appointed_by, Barack Obama
President Barack Obama and the Message Beyond the Photograph, common.topic.subjects, Contemporary history
m.010g2xdb, government.government_position_held.appointed_by, Barack Obama
m.0k9_61x, government.government_position_held.appointed_by, Barack Obama
Contemporary history, book.book_subject.works, President Barack Obama and the Message Beyond the Photograph
Barack Obama, government.political_appointer.appointees, m.0jtlxf_
President, film.film.country, United States of America
Barack Obama, government.politician.government_positions_held, m.03h9hn4
m.05bh_ms, government.government_position_held.appointed_by, Barack Obama
m.09w3qtm, government.government_position_held.appointed_by, Barack Obama
m.0dkbptg, common.webpage.topic, Barack Obama
Yes We Can: A Biography of President Barack Obama, common.topic.article, m.064d40l
Barack Obama, people.person.places_lived, m.04s_x47
Barack Obama, book.book_subject.works, Barack Obama and the Jim Crow Media
Barack Obama, common.image.appears_in_topic_gallery, bobbi4freedom
Barack Obama, government.political_appointer.appointees, m.010hc1p6
Barack Obama, Sr., people.person.education, m.04hg7hb
m.05bhv8k, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0glx1wx
m.0zrhnnr, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05bh_kg
Barack Obama, government.political_appointer.appointees, m.0j34rt6
Barack Obama, government.political_appointer.appointees, m.05bj130
Family of Barack Obama, common.topic.webpage, m.0b48wwv
m.03h9hnh, government.legislative_committee_membership.member, Barack Obama
Barack Obama Extends Historical Legacy \"Astride the Promise of Change\", book.written_work.subjects, American History
Barack Obama, government.political_appointer.appointees, m.05kcjbj
Barack Obama, government.political_appointer.appointees, m.05bj0_8
Joe Biden, government.us_vice_president.to_president, Barack Obama
United States presidential election, 2008, government.election.winner, Barack Obama
m.07nt04k, government.government_position_held.appointed_by, Barack Obama
m.05g438r, government.government_position_held.appointed_by, Barack Obama
Barack Obama, base.firsts.first.achievements, m.04wrwjv
m.010g2w70, government.government_position_held.appointed_by, Barack Obama
m.05g5040, government.government_position_held.appointed_by, Barack Obama
Barack Obama in His Own Words, book.book_edition.isbn, 9780786720576
Barack Obama, people.person.education, m.0nbyj44
m.010g2c43, government.government_position_held.appointed_by, Barack Obama
Barack Obama, Sr., people.person.children, Auma Obama
Contemporary history, common.topic.subject_of, President Barack Obama and the Message Beyond the Photograph
m.05bp1tv, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.education, m.02nqgpk
Barack Obama, government.political_appointer.appointees, m.0r5y214
m.052m8b1, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05gwyg2
United States of America, government.government_office_or_title.jurisdiction, United States Senator
m.010qyt8y, government.government_position_held.appointed_by, Barack Obama
m.012m9zwm, education.education.student, Barack Obama
Barack Obama, government.political_appointer.appointees, m.09rg1bz
Barack Obama, government.political_appointer.appointees, m.0w2cph_
m.04_5kfv, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.politician.legislative_committees_served_on, m.03h9hp_
Barack Obama, book.book_subject.works, Game Change
m.03xdty5, people.place_lived.person, Barack Obama
Family of Barack Obama, common.topic.notable_for, g.12575gdnp
m.02nqgy7, business.employment_tenure.person, Barack Obama
Barack Obama, common.topic.article, m.02wh0cm
Barack Obama presidential campaign, 2012, government.election_campaign.candidate, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05bp2yr
m.05bhs1w, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.quotations, Just give it a try
m.05bh_kg, government.government_position_held.appointed_by, Barack Obama
Barack Obama Senate Portrait, common.image.size, m.02b54jd
Barack Obama, people.person.sibling_s, m.0n4sql0
m.052mbx6, government.government_position_held.office_position_or_title, Senior Advisor to the President of the United States
Barack Obama, people.person.education, m.02nqgn2
Barack Obama, government.political_appointer.appointees, m.05bht4v
m.064d51m, government.government_position_held.appointed_by, Barack Obama
Barack Obama, base.crime.lawyer.lawyer_type, Constitutional law
Barack Obama, military.military_commander.military_commands, m.01282ptc
Barack Obama, government.political_appointer.appointees, m.010qp4_t
Barack Obama, government.politician.party, m.03gjhww
Barack Obama, Sr., people.person.ethnicity, Africans
Barack Obama, book.book_subject.works, Obama - The Postmodern Coup
Barack Obama, Sr., people.person.children, Barack Obama
Barack Obama, people.person.children, Natasha Obama
Barack Obama, Sr., people.person.children, Abo Obama
National Commission on Fiscal Responsibility and Reform, organization.organization.founders, Barack Obama
Barack Obama, people.person.spouse_s, m.02nqglv
Barack Obama, people.person.employment_history, m.02nqgq1
Barack Obama, government.political_appointer.appointees, m.05nd5t7
m.05ctx2h, government.government_position_held.appointed_by, Barack Obama
m.05bh_5w, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05lmlyn
Barack Obama, people.person.education, m.02nqgp6
m.010p3jbd, government.government_position_held.appointed_by, Barack Obama
m.0jtmkth, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.nationality, United States of America
Barack Obama, government.political_appointer.appointees, m.0nd7wz9
Barack Obama, people.person.employment_history, m.02nqgqh
m.0527js1, government.government_position_held.appointed_by, Barack Obama
m.0k9_6d4, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.05bj04r
Barack Obama, government.political_appointer.appointees, m.04_5lb8
Barack Obama, common.topic.image, Barack Obama
Barack Obama Senate Portrait, common.image.appears_in_topic_gallery, Current heads of state
m.09qggj9, award.ranking.item, Barack Obama
Janet Napolitano, base.obamabase.cabinet_member.cabinet_position, United States Secretary of Homeland Security
Barack H. Obama: The Unauthorized Biography, common.topic.notable_types, Book
Barack Obama, government.political_appointer.appointees, m.05bh__x
Barack Obama, Sr., common.topic.notable_for, g.125b6pkhc
Barack Obama, government.political_appointer.appointees, m.0k06hnf
Barack Obama in His Own Words, book.book_edition.number_of_pages, m.081zms4
Brad Pfaff, common.topic.image, Official portrait of Barack Obama
m.03xdtyc, people.place_lived.person, Barack Obama
m.0b49520, common.webpage.topic, Family of Barack Obama
Barack Obama, Sr., people.person.sibling_s, m.0wzjdyf
Barack Obama, internet.blogger.blog, BarackObama
Barack Obama, government.political_appointer.appointees, m.05bhv8k
Barack Obama Extends Historical Legacy \"Astride the Promise of Change\", book.written_work.subjects, Barack Obama
Family of Barack Obama, common.topic.article, m.06_wyyv
m.0j34rt6, government.government_position_held.appointed_by, Barack Obama
m.05kcjbj, government.government_position_held.appointed_by, Barack Obama
Barack Obama, Sr., people.person.religion, Atheism
Barack Obama, people.person.employment_history, m.02nqgy7
Barack Obama 2004 US Senate Campaign, government.election_campaign.party, Democratic Party
Yes We Can: A Biography of President Barack Obama, common.topic.image, barack.jpg
Barack Obama, government.political_appointer.appointees, m.0wzl8x_
Barack Obama, government.political_appointer.appointees, m.0bvbn3r
m.03h96h6, government.government_position_held.office_holder, Barack Obama
Barack Obama, common.topic.image, Official portrait of Barack Obama
Barack Obama, government.political_appointer.appointees, m.010g2w70
m.03xdtyk, people.place_lived.person, Barack Obama
Barack Obama, government.political_appointer.appointees, m.09knk78
Barack Obama, government.politician.legislative_committees_served_on, m.03h9hnh
Barack Obama, government.political_appointer.appointees, m.0527js1
Barack Obama, government.political_appointer.appointees, m.05bp1tv
m.02nqgq1, business.employment_tenure.person, Barack Obama
m.010qp4_t, government.government_position_held.appointed_by, Barack Obama
Barack Obama, Sr., people.person.spouse_s, m.0j4l4yg
m.05f_33k, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.0r60ybv
m.05bj04r, government.government_position_held.appointed_by, Barack Obama
Barack Obama, people.person.profession, Writer
m.052mbx6, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.010g2xdb
Barack Obama in His Own Words, common.topic.notable_for, g.1258yx_5g
Barack Obama, Sr., people.person.children, David Ndesandjo
m.0k9_4xg, government.government_position_held.appointed_by, Barack Obama
m.05gh7qx, government.government_position_held.appointed_by, Barack Obama
m.09knk78, government.government_position_held.appointed_by, Barack Obama
m.09vkg_2, government.government_position_held.appointed_by, Barack Obama
m.0jb8k42, government.government_position_held.appointed_by, Barack Obama
Barack Obama, freebase.valuenotation.is_reviewed, Height
Barack Obama, government.political_appointer.appointees, m.04_2vlm
m.03h9hn4, government.government_position_held.office_holder, Barack Obama
m.0k06hnf, government.government_position_held.appointed_by, Barack Obama
Barack Obama, government.political_appointer.appointees, m.064d51m
Barack Obama, people.person.sibling_s, m.0n4sqh8
Barack Obama, government.politician.government_positions_held, m.04s_2dh
Barack Obama, government.political_appointer.appointees, m.0115sj6s
Barack Obama, military.military_commander.military_commands, m.0125qnw3
m.0118nrhq, government.government_position_held.appointed_by, Barack Obama
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Barack Obama, people.person.quotations, My job is not to represent Washington to you, but to represent you to Washington.
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m.0q4lvc7, government.government_position_held.appointed_by, Barack Obama

Answer: United States Senator