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: The politician that held the position of Under Secretary of Defense for Personnel and Readiness attended which university? 
Knowledge Triplets: g.11b7t97vln, education.education.institution, Columbia University
m.04lnlzb, education.education.institution, Columbia University
m.0jzrngk, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7yp
United States Department of Defense, government.governmental_body.members, m.010g2w70
m.04kc7mq, military.military_service.military_force, United States Department of Defense
m.02wnrnk, education.education.degree, PhD
m.010f14qv, education.education.degree, PhD
Harry S. Truman, organization.organization_founder.organizations_founded, United States Department of Defense
m.02wpfqh, education.education.institution, Columbia University
m.0zffzjt, education.education.institution, Columbia University
United States Department of Defense, military.armed_force.personnel, m.04kc7ly
m.0b6b7xp, government.government_position_held.governmental_body, United States Department of Defense
United States Department of Defense, government.governmental_body.members, m.0b6b7xk
m.04jsy_4, government.government_position_held.governmental_body, United States Department of Defense
m.0zwwlfh, education.education.institution, Columbia University
m.0hnmwqj, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7w1
United States Secretary of Defense, common.topic.notable_types, Government Office or Title
m.09w3qtm, government.government_position_held.jurisdiction_of_office, United States of America
United States Department of Defense, common.topic.article, m.07y0z
United States Department of Defense, organization.organization.child, m.0j5vjmn
m.0zcvkyq, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7y1
m.012p0hmh, education.education.institution, Columbia University
m.0b6b7xf, government.government_position_held.office_position_or_title, United States Secretary of Defense
United States Department of Defense, government.governmental_body.members, m.0b6b7wp
m.02wpfd5, education.education.institution, Columbia University
m.0sw3pfd, education.education.institution, Columbia University
m.02wprfy, education.education.degree, PhD
United States Department of Defense, book.author.works_written, 2007 Submarine Encyclopedia
m.0b6b7xf, government.government_position_held.governmental_body, United States Department of Defense
Barack Obama, government.political_appointer.appointees, m.09w3qtm
m.0770lmp, education.education.degree, PhD
United States Department of Defense, government.governmental_body.members, m.0b6b7xf
Harry S. Truman, government.political_appointer.appointees, m.0b6b7w9
m.04fsb35, education.education.degree, PhD
m.04ynvhj, education.education.institution, Columbia University
United States Department of Defense, organization.organization.child, m.0131hsgv
United States Department of Defense, government.governmental_body.members, m.0wqb4qb
Under Secretary of Defense Dr. David S. C. Chu, common.image.size, m.02bd6tz
m.0jzrmsq, education.education.institution, Columbia University
m.04lnlzb, education.education.degree, PhD
United States Department of Defense, government.governmental_body.members, m.0b6b7yp
m.0zf5kpf, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7xy
m.0646ksv, education.education.degree, PhD
m.04hfjpv, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7y1
m.0b6b7w1, government.government_position_held.office_position_or_title, United States Secretary of Defense
United States Department of Defense, base.ontologies.ontology_instance.equivalent_instances, m.07nf_0v
m.010142pr, education.education.degree, PhD
m.0nd7wz9, government.government_position_held.governmental_body, United States Department of Defense
m.0n0smdf, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7y9
Under Secretary of Defense for Personnel and Readiness, government.government_office_or_title.governmental_body_if_any, United States Department of Defense
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7y9
m.0bmyhkw, education.education.institution, Columbia University
g.11bc81vyfn, education.education.institution, Columbia University
m.0zjj55y, education.education.institution, Columbia University
m.0gmhhcz, education.education.institution, Columbia University
United States Department of Defense, book.author.works_written, 50 Years of Army Computing
United States Department of Defense, book.author.works_written, U.S. Army Counterinsurgency Handbook
m.0jzrjkf, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7xt
m.0cpkqyf, education.education.institution, Columbia University
g.11bv2qj18s, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7w1
United States Department of Defense, government.governmental_body.offices_positions, Under Secretary of Defense for Personnel and Readiness
m.04hfqbj, education.education.institution, Columbia University
m.0b6b7wf, government.government_position_held.governmental_body, United States Department of Defense
United States Department of Defense, law.litigant.party_to_cases, m.0dggt0f
m.0jzrld8, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7x1
m.0b6b7yf, government.government_position_held.governmental_body, United States Department of Defense
m.0b6b7w5, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0b6b7y1, government.government_position_held.governmental_body, United States Department of Defense
m.0646kqv, education.education.degree, PhD
m.0jzrkvh, education.education.institution, Columbia University
Under Secretary of Defense for Personnel and Readiness, common.topic.image, Erin C. Conaton
m.0b6b7y9, government.government_position_held.governmental_body, United States Department of Defense
m.01060h7z, education.education.degree, PhD
m.02wnffw, education.education.degree, PhD
m.0_qxwpf, education.education.institution, Columbia University
m.01010brs, education.education.degree, PhD
Theodore Trautwein, people.person.education, m.09vjkxp
m.04hgrtj, education.education.institution, Columbia University
m.0h1jrzr, education.education.institution, Columbia University
m.04hghns, education.education.institution, Columbia University
m.09w3qtm, government.government_position_held.governmental_body, United States Department of Defense
m.0nd7wz9, government.government_position_held.appointed_by, Barack Obama
m.0b6b7wp, government.government_position_held.office_position_or_title, United States Secretary of Defense
United States Department of Defense, book.author.works_written, 2007 U.S. Military Documents
m.0jzrlsz, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7yf
m.04fmlmf, education.education.institution, Columbia University
United States Department of Defense, organization.organization.child, m.0dg7674
m.02nqgmw, education.education.institution, Columbia University
United States Department of Defense, book.author.works_written, US Army Survival Manual
m.0666hnb, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7yk
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7yk
Erin C. Conaton, government.politician.government_positions_held, m.0nd7wz9
m.04hldyr, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7yf
m.0svzrlh, education.education.institution, Columbia University
United States Department of Defense, base.newsevents.news_reporting_organisation.news_reports, m.0bj8b_y
Harry S. Truman, government.political_appointer.appointees, m.0b6b7w5
g.11btt5hry1, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7wf
United States Department of Defense, government.governmental_body.members, m.0b6b7x9
m.0gmhhpf, education.education.institution, Columbia University
United States Department of Defense, book.author.works_written, Boobytraps Fm5-31
m.0pbygzm, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.04jsy_4
Under Secretary of Defense for Personnel and Readiness, common.topic.notable_types, Government Office or Title
Under Secretary of Defense for Personnel and Readiness, common.topic.image, Under Secretary of Defense Dr. David S. C. Chu
United States Department of Defense, common.topic.webpage, m.0422kyz
United States Secretary of Defense, government.government_office_or_title.governmental_body_if_any, United States Department of Defense
m.0hnzsnt, education.education.institution, Columbia University
m.0b6b7wf, government.government_position_held.appointed_by, Harry S. Truman
United States Department of Defense, common.topic.notable_types, Government Agency
United States Department of Defense, common.topic.webpage, m.07ldrsr
m.0422kyz, common.webpage.topic, United States Department of Defense
United States Department of Defense, organization.organization.child, m.0cm652s
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7xk
g.11btvc5vkl, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7xf
m.0b6b7xy, government.government_position_held.governmental_body, United States Department of Defense
United States Department of Defense, projects.project_participant.projects, m.0sxbk18
United States Department of Defense, projects.project_participant.projects, m.0tkb8y3
m.0b6b7wt, government.government_position_held.office_position_or_title, United States Secretary of Defense
United States Department of Defense, government.government_agency.government, Federal government of the United States
United States Department of Defense, base.schemastaging.organization_extra.contact_webpages, m.010gcms8
m.0b6b7y9, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.07ldrsr, common.webpage.topic, United States Department of Defense
m.09scccv, education.education.degree, PhD
m.06zy3yn, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7x5
Under Secretary of Defense Dr. David S. C. Chu, common.image.appears_in_topic_gallery, David S. C. Chu
m.0n0zrzk, education.education.institution, Columbia University
m.0b6b7w9, government.government_position_held.office_position_or_title, United States Secretary of Defense
United States Department of Defense, book.author.works_written, Schlesinger Report
David Rosenbaum, people.person.education, m.02wpf13
m.0nd7wz9, government.government_position_held.office_position_or_title, Under Secretary of Defense for Personnel and Readiness
m.0b6b7xy, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.012bzkdk, education.education.institution, Columbia University
m.0b6b7yk, government.government_position_held.office_position_or_title, United States Secretary of Defense
United States Department of Defense, organization.organization.founders, Harry S. Truman
m.0b6b7x9, government.government_position_held.governmental_body, United States Department of Defense
Barack Obama, government.political_appointer.appointees, m.010g2w70
m.0cv3jmy, organization.organization_relationship.parent, United States Department of Defense
m.0b6b7yk, government.government_position_held.governmental_body, United States Department of Defense
m.04fmlls, education.education.degree, MBA
m.09vjbjf, education.education.institution, Columbia University
United States Department of Defense, book.author.works_written, Improvised Munitions Handbook
g.11btvxdnm5, education.education.institution, Columbia University
m.0b6b7w9, government.government_position_held.governmental_body, United States Department of Defense
m.02wllwt, common.webpage.topic, United States Department of Defense
m.0gmhfqm, education.education.institution, Columbia University
m.0b6b7xk, government.government_position_held.governmental_body, United States Department of Defense
m.0b6b7wk, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.010g2w70, government.government_position_held.jurisdiction_of_office, United States of America
m.0n9zqyf, education.education.institution, Columbia University
m.0b6b7wt, government.government_position_held.governmental_body, United States Department of Defense
m.010bc9j4, education.education.degree, PhD
United States Department of Defense, government.governmental_body.members, m.0whvkx3
m.0bmyjyq, education.education.institution, Columbia University
m.0cpmm39, education.education.degree, PhD
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7x9
m.0tkb8y3, projects.project_participation.participant, United States Department of Defense
David Hazony, people.person.education, m.0sw3pfd
m.02wpf49, education.education.institution, Columbia University
United States Department of Defense, organization.organization.child, m.0cm652m
g.11b87w5qq8, education.education.institution, Columbia University
Harry S. Truman, government.political_appointer.appointees, m.0b6b7wf
United States Department of Defense, government.governmental_body.members, m.0b6b7wt
m.01060jby, education.education.degree, PhD
g.11bc82vfrz, education.education.institution, Columbia University
m.010bcj0y, education.education.degree, PhD
United States Department of Defense, military.armed_force.personnel, m.04kc7mq
David A. Bray, common.topic.subject_of, United States Department of Defense
United States Department of Defense, common.topic.notable_for, g.125fmxpp0
m.0n3nz1d, government.government_position_held.governmental_body, United States Department of Defense
Under Secretary of Defense for Personnel and Readiness, government.government_office_category.officeholders, m.0nd7wz9
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7y5
m.0b6b7xk, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0b6b7yf, government.government_position_held.office_position_or_title, United States Secretary of Defense
Stanley Clifford, common.image.appears_in_topic_gallery, Under Secretary of Defense for Personnel and Readiness
United States Department of Defense, common.topic.image, DoD Seal
Under Secretary of Defense for Personnel and Readiness, government.government_office_category.officeholders, m.0nd7wz9
m.0whvkx3, government.government_position_held.governmental_body, United States Department of Defense
United States Department of Defense, book.author.works_written, Map Reading and Land Navigation
Under Secretary of Defense for Personnel and Readiness, government.government_office_or_title.office_holders, m.0nd7wz9
m.0b6b7y5, government.government_position_held.governmental_body, United States Department of Defense
m.05yzhtt, education.education.institution, Columbia University
m.0bmywhz, education.education.institution, Columbia University
m.0b6b7wk, government.government_position_held.governmental_body, United States Department of Defense
m.06wglt7, education.education.degree, PhD
m.0jzrrdn, education.education.institution, Columbia University
m.0hzhjkd, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0b6b7w5
United States Department of Defense, government.governmental_body.members, m.0b6b7y5
m.0jzrklh, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7wp
m.04hfhnt, education.education.institution, Columbia University
United States Department of Defense, book.newspaper_owner.newspapers_owned, Stars and Stripes
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7xt
United States Department of Defense, government.government_agency.jurisdiction, United States of America
Ernesto Cardenal, people.person.education, m.0n13sgt
g.11btvc61pf, education.education.institution, Columbia University
m.0131hsgv, organization.organization_relationship.parent, United States Department of Defense
United States Department of Defense, government.governmental_body.members, m.0b6b7xp
g.11btlvkwk2, education.education.institution, Columbia University
m.09vj4nt, education.education.degree, PhD
m.04yt1bb, education.education.degree, PhD
m.04fmll_, education.education.institution, Columbia University
m.0b6b7w5, government.government_position_held.governmental_body, United States Department of Defense
m.0b6b7xt, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0wqb4qb, government.government_position_held.jurisdiction_of_office, United States of America
m.0zf5kpf, education.education.degree, PhD
United States Department of Defense, projects.project_participant.projects, m.0gfm_hq
m.04fmlls, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.offices_positions, United States Secretary of Defense
m.02wnnlr, education.education.degree, PhD
m.010128mg, education.education.degree, PhD
m.0wlqbry, education.education.institution, Columbia University
m.04hwbkq, education.education.institution, Columbia University
United States Department of Defense, government.government.agency, Center for Development of Security Excellence (CDSE)
m.02wnrhw, education.education.degree, PhD
m.04kc7ly, military.military_service.military_force, United States Department of Defense
United States Department of Defense, freebase.valuenotation.is_reviewed, Contact webpages
United States Department of Defense, book.author.works_written, Department of Defense Dictionary of Military and Associated Terms
m.0b6b7wy, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.02wpfhk, education.education.institution, Columbia University
m.0b6b7xt, government.government_position_held.governmental_body, United States Department of Defense
United States Department of Defense, common.topic.webpage, m.02wllwt
m.0770n47, education.education.degree, PhD
United States Department of Defense, common.topic.subjects, David A. Bray
United States Department of Defense, government.governmental_body.members, m.0b6b7w9
Bachelor of Arts, education.education.degree, m.0gmhhcz
m.04hjhjt, education.education.institution, Columbia University
m.0b6b7x5, government.government_position_held.governmental_body, United States Department of Defense
m.0b6b7w9, government.government_position_held.appointed_by, Harry S. Truman
Columbia University, education.university.departments, Columbia University Department of Political Science
m.09vjhqd, education.education.institution, Columbia University
m.0b6b7wp, government.government_position_held.governmental_body, United States Department of Defense
m.0jzrrzm, education.education.institution, Columbia University
m.09w3qtm, government.government_position_held.appointed_by, Barack Obama
m.0b6b7w5, government.government_position_held.appointed_by, Harry S. Truman
United States Department of Defense, book.author.works_written, Encyclopedia of Arms and Weapons
Norman Podhoretz, people.person.education, m.02wpfqh
m.0b6b7x5, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.04fv969, education.education.degree, PhD
United States Department of Defense, government.governmental_body.members, m.0n3nz1d
m.0sw36pf, education.education.institution, Columbia University
m.0fpsmwg, common.webpage.topic, United States Department of Defense
m.03ltmny, education.education.institution, Columbia University
m.04fntny, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.09w3qtm
m.04j7v40, military.military_service.military_force, United States Department of Defense
m.010c49ft, education.education.degree, PhD
m.0b6b7wy, government.government_position_held.governmental_body, United States Department of Defense
m.04md9lt, education.education.institution, Columbia University
m.0b6b7yp, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0svybjh, education.education.institution, Columbia University
m.04fs8jy, education.education.degree, PhD
Center for Development of Security Excellence (CDSE), government.government_agency.government, United States Department of Defense
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7wy
m.09vjgkd, education.education.institution, Columbia University
m.0b6b7wf, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0zhwzjt, education.education.institution, Columbia University
m.01060338, education.education.degree, PhD
m.0jzrqnd, education.education.institution, Columbia University
Barack Obama, people.person.education, m.02nqgmw
m.0102ycdt, education.education.degree, PhD
John Eisenhower, people.person.education, m.0n45ww1
m.0b6b7x9, government.government_position_held.office_position_or_title, United States Secretary of Defense
United States Department of Defense, government.governmental_body.members, m.0b6b7wf
Barack Obama, government.political_appointer.appointees, m.0nd7wz9
m.0sxbk18, projects.project_participation.participant, United States Department of Defense
m.0hnjd21, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7wt
David S. C. Chu, common.topic.image, Under Secretary of Defense Dr. David S. C. Chu
Under Secretary of Defense Dr. David S. C. Chu, common.image.appears_in_topic_gallery, Under Secretary of Defense for Personnel and Readiness
m.0hnj94z, education.education.institution, Columbia University
Erin C. Conaton, common.image.appears_in_topic_gallery, Under Secretary of Defense for Personnel and Readiness
m.02wpf4p, education.education.degree, PhD
m.09vjdkg, education.education.institution, Columbia University
Bill Roorbach, people.person.education, m.09vjnkm
m.0bj8b_y, base.newsevents.news_report.news_reporting_organisation, United States Department of Defense
Under Secretary of Defense for Personnel and Readiness, common.topic.image, Stanley Clifford
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7x1
United States Department of Defense, book.author.works_written, In Time of Emergency
m.0b6b7w1, government.government_position_held.governmental_body, United States Department of Defense
m.0nd7wz9, government.government_position_held.basic_title, Under Secretary of Defense for Personnel and Readiness
m.0znxxlh, education.education.institution, Columbia University
m.0b6b7w1, government.government_position_held.appointed_by, Harry S. Truman
m.0k3fhmq, education.education.institution, Columbia University
United States Department of Defense, military.armed_force.personnel, m.04j7v40
m.01295235, education.education.degree, PhD
United States Department of Defense, organization.organization.child, m.0cv3jmy
m.0b6b7x1, government.government_position_held.governmental_body, United States Department of Defense
m.010g2w70, government.government_position_held.governmental_body, United States Department of Defense
g.11bybczw8l, education.education.institution, Columbia University
Under Secretary of Defense for Personnel and Readiness, common.topic.notable_for, g.125513253
United States Department of Defense, organization.organization.headquarters, m.0wp8129
m.0b6b7y5, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.02wpfhc, education.education.institution, Columbia University
m.0b6b7xp, government.government_position_held.office_position_or_title, United States Secretary of Defense
Federal government of the United States, government.government.agency, United States Department of Defense
United States Department of Defense, common.topic.webpage, m.0fpsmwg
m.0zrjqyf, education.education.institution, Columbia University
m.0jzrlrf, education.education.institution, Columbia University
United States Department of Defense, book.author.works_written, 2005 Defend America
United States Department of Defense, organization.organization.child, m.0cm652g
United States Department of Defense, government.governmental_body.members, m.0b6b7xy
Under Secretary of Defense for Personnel and Readiness, common.topic.article, m.0dq_h7
m.0zjj55y, education.education.degree, PhD
m.010g2w70, government.government_position_held.appointed_by, Barack Obama
m.04hllds, education.education.institution, Columbia University
m.0770pf6, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7x5
m.0b6b7x1, government.government_position_held.office_position_or_title, United States Secretary of Defense
Columbia University Department of Political Science, education.department.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7wk
m.0gmjksz, education.education.institution, Columbia University
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7w5
g.11b7zjrsnd, education.education.institution, Columbia University
United States Department of Defense, government.governmental_body.members, m.0nd7wz9
m.02wn328, education.education.degree, PhD
m.0nd7wz9, government.government_position_held.office_holder, Erin C. Conaton
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7w9
United States Department of Defense, government.governmental_body.members, m.0b6b7wk
United States Department of Defense, government.governmental_body.members, m.0b6b7wy
m.0b6b7y1, government.government_position_held.office_position_or_title, United States Secretary of Defense
m.0667yvf, education.education.degree, PhD
m.0znmjkd, education.education.institution, Columbia University
g.11btzvyvn0, education.education.institution, Columbia University
m.0b6b7yp, government.government_position_held.governmental_body, United States Department of Defense
United States Department of Defense, book.author.book_editions_published, US Army Survival Manual
United States Department of Defense, organization.organization.child, m.0zdvlt8
m.0wqb4qb, government.government_position_held.governmental_body, United States Department of Defense
m.0nd7wz9, government.government_position_held.appointed_by, Barack Obama
United States Department of Defense, common.topic.image, The Pentagon US Department of Defense building
United States Secretary of Defense, government.government_office_or_title.office_holders, m.0b6b7xp
Harry S. Truman, government.political_appointer.appointees, m.0b6b7w1
m.01089thq, education.education.degree, PhD
m.0dwjb21, education.education.institution, Columbia University

Answer: Columbia University