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 college did the politician that serves as undersecretary attend? 
Knowledge Triplets: m.04mjy4c, education.education.institution, Columbia University
m.02wnnnm, education.education.institution, Columbia University
m.0cplfdk, education.education.institution, Columbia University
m.0jzrjkf, education.education.institution, Columbia University
g.11bybczw8l, education.education.institution, Columbia University
m.0hnj94z, education.education.institution, Columbia University
m.05yyngz, education.education.institution, Columbia University
m.02wpfrb, education.education.institution, Columbia University
m.0svydgt, education.education.institution, Columbia University
m.02wpsrn, education.education.institution, Columbia University
m.09vvzbc, education.education.institution, Columbia University
m.0hvxpqy, education.education.institution, Columbia University
m.04hwlvq, education.education.institution, Columbia University
m.02wnkym, education.education.institution, Columbia University
m.0fs3qyb, education.education.institution, Columbia University
m.0n15zmh, education.education.institution, Columbia University
m.05yzdsz, education.education.institution, Columbia University
m.04dxhyk, education.education.institution, Columbia University
m.0n9zqyf, education.education.institution, Columbia University
m.0jzrngk, education.education.institution, Columbia University
g.11bc81vyfn, education.education.institution, Columbia University
m.0wkz6bc, education.education.institution, Columbia University
m.0zrjkbl, education.education.institution, Columbia University
m.0102zd9v, government.government_position_held.basic_title, Undersecretary
m.02wpqnm, education.education.institution, Columbia University
m.0hgtdjn, education.education.institution, Columbia University
m.02wnsnt, education.education.institution, Columbia University
m.0n1jk0n, education.education.institution, Columbia University
m.05yyx7c, education.education.institution, Columbia University
m.0zlcwcq, education.education.institution, Columbia University
m.09vjksb, education.education.institution, Columbia University
m.02wnmhd, education.education.institution, Columbia University
m.0zt21xx, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wmwck, education.education.institution, Columbia University
m.0wlqbry, education.education.institution, Columbia University
m.0jzrjy5, education.education.institution, Columbia University
m.0dw0kyq, education.education.institution, Columbia University
m.05yzdms, education.education.institution, Columbia University
m.03gknvh, education.education.institution, Columbia University
m.0n1354q, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wnyyn, education.education.institution, Columbia University
m.0svynk8, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wnylh, education.education.institution, Columbia University
m.0n1mrfy, education.education.institution, Columbia University
m.0gggky5, education.education.institution, Columbia University
m.0h7tybq, education.education.institution, Columbia College of Columbia University in the City of New York
m.0wzl8h_, government.political_appointer.appointees, Barack Obama
m.02wmrzj, education.education.institution, Columbia University
m.0lyj7yc, education.education.institution, Columbia University
m.0n1md2y, education.education.institution, Columbia University
m.02wpncd, education.education.institution, Columbia University
m.04lnlbh, education.education.institution, Columbia University
m.0n3zsrc, education.education.institution, Columbia University
m.04yymxv, education.education.institution, Columbia University
m.0sw11vh, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wndxb, education.education.institution, Columbia University
m.0jzrk8m, education.education.institution, Columbia University
m.04lnrjr, education.education.institution, Columbia University
m.0hzhjkd, education.education.institution, Columbia University
m.0n1kyyv, education.education.institution, Columbia University
m.04hjtcd, education.education.institution, Barnard College
m.02wmrcp, education.education.institution, Columbia University
m.0hn_9bc, education.education.institution, Columbia University
m.0h7ttth, education.education.institution, Columbia College of Columbia University in the City of New York
m.04hwbkq, education.education.institution, Columbia University
m.02wnwcm, education.education.institution, Columbia University
m.0n9yljl, education.education.institution, Columbia College of Columbia University in the City of New York
m.09vjktd, education.education.institution, Columbia University
m.0wzl8h_, government.government_position_held.basic_title, Undersecretary
m.0wkb8tn, education.education.institution, Columbia College of Columbia University in the City of New York
m.04ystr2, education.education.institution, Columbia University
m.0jzrrzm, education.education.institution, Columbia University
m.0svzrlh, education.education.institution, Columbia University
m.0w5lfhm, education.education.institution, Columbia University
m.0hnmwqj, education.education.institution, Columbia University
m.05t6nkz, education.education.institution, Columbia University
m.04yvssw, education.education.institution, Columbia College of Columbia University in the City of New York
m.04lp7y8, education.education.institution, Columbia University
m.04lrfzl, education.education.institution, Columbia University
m.0dm6rzg, education.education.institution, Columbia University
m.04fwfcw, business.employment_tenure.title, Undersecretary
m.0svyp3h, education.education.institution, Columbia College of Columbia University in the City of New York
m.0gtzdvf, education.education.institution, Columbia University
m.04hssbd, education.education.institution, Columbia University
m.0hzvtpt, education.education.institution, Columbia College of Columbia University in the City of New York
m.05yzdgd, education.education.institution, Columbia University
m.02wmyy3, education.education.institution, Columbia University
m.0gmhfnb, education.education.institution, Columbia University
m.04fntnq, education.education.institution, Columbia University
Undersecretary, fictional_universe.character_rank.characters_of_this_rank, Dr Cartwright
m.0wkdhjh, education.education.institution, Columbia University
m.02wnbjc, education.education.institution, Columbia University
m.0hnjd21, education.education.institution, Columbia University
m.0jzrlrf, education.education.institution, Columbia University
m.02wn9yb, education.education.institution, Columbia University
m.05yy_ll, education.education.institution, Columbia University
m.0n1jyyd, education.education.institution, Columbia University
m.04mk299, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wpkrl, education.education.institution, Columbia University
m.02wnkcf, education.education.institution, Columbia University
m.02wnmrg, education.education.institution, Columbia University
m.0wknb8s, education.education.institution, Columbia University
m.02wnnpy, education.education.institution, Columbia University
m.02wnm9h, education.education.institution, Columbia University
g.11b7zjrsnd, education.education.institution, Columbia University
Columbia University Department of Political Science, education.department.institution, Columbia University
m.0n0smdf, education.education.institution, Columbia University
m.04hllds, education.education.institution, Columbia University
m.02wns9c, education.education.institution, Columbia University
m.0w57bwm, education.education.institution, Columbia University
m.045xmhb, education.education.institution, Columbia University
m.0ggf88c, education.education.institution, Columbia University
m.04hqqcm, education.education.institution, Columbia University
m.04hftxd, education.education.institution, Columbia University
m.0w5b8bc, education.education.institution, Columbia University
m.09vjgkd, education.education.institution, Columbia University
m.09vjczp, education.education.institution, Columbia University
Undersecretary, common.topic.article, m.0cq0s5
m.02wpnkh, education.education.institution, Columbia University
m.09scc2y, education.education.institution, Columbia University
m.02wnczh, education.education.institution, Columbia University
m.05yzmrk, education.education.institution, Columbia University
m.02wpfkb, education.education.institution, Columbia University
m.02wnz3c, education.education.institution, Columbia University
m.04lnlzb, education.education.institution, Columbia University
m.0znkq0s, education.education.institution, Columbia University
m.05yzhxm, education.education.institution, Columbia University
m.04hqnd5, education.education.institution, Columbia University
m.0jzrqnk, education.education.institution, Columbia University
m.04m10jn, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wmy4y, education.education.institution, Columbia University
m.02wnhn5, education.education.institution, Columbia University
m.02wpy6m, education.education.institution, Columbia College of Columbia University in the City of New York
m.0zcvkyq, education.education.institution, Columbia University
Bachelor of Arts, education.education.degree, m.02wn48x
m.0gmhfmp, education.education.institution, Columbia University
m.0hzv5tb, education.education.institution, Columbia University
m.03p72sb, education.education.institution, Columbia University
Undersecretary, government.government_office_category.officeholders, m.0102zd9v
m.0svykds, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wmqyf, education.education.institution, Columbia University
m.02wmvnl, education.education.institution, Columbia University
m.02wn48x, education.educational_institution.students_graduates, Columbia University
m.0jzrlsz, education.education.institution, Columbia University
m.04hldyr, education.education.institution, Columbia University
m.02wnhz9, education.education.institution, Columbia University
Barack Obama, people.person.education, m.02nqgmw
m.04fntny, education.education.institution, Columbia University
m.0pcmhr3, education.education.institution, Columbia College of Columbia University in the City of New York
m.0n1jvjk, education.education.institution, Columbia University
m.03ltmny, education.education.institution, Columbia University
m.02wmzny, education.education.institution, Columbia University
m.05tbchk, education.education.institution, Columbia University
m.05yzvwn, education.education.institution, Columbia University
m.0gh3tby, business.employment_tenure.title, Undersecretary
m.04hqylt, education.education.institution, Columbia University
m.02wnztd, education.education.institution, Columbia University
m.0n1nbks, education.education.institution, Columbia University
m.0ghcgdr, education.education.institution, Columbia University
m.02wpjth, education.education.institution, Columbia University
m.04lnjgc, education.education.institution, Columbia University
m.02kypw4, education.education.institution, Columbia College of Columbia University in the City of New York
m.04hwcvw, education.education.institution, Barnard College
m.04hqssy, education.education.institution, Barnard College
m.0jzrk9h, education.education.institution, Columbia University
m.06wgnkd, education.education.institution, Columbia University
Columbia University, education.university.departments, Columbia University Department of Political Science
m.0jzrnnz, education.education.institution, Columbia University
m.0n1bcsb, education.education.institution, Columbia University
m.0dwcny4, education.education.institution, Columbia University
m.09sc84h, education.education.institution, Columbia University
m.05yzhtt, education.education.institution, Columbia University
m.0czvwch, education.education.institution, Columbia University
m.0gvyccm, education.education.institution, Columbia University
m.02wmznn, education.education.institution, Columbia University
m.02kynvj, education.education.institution, Columbia University
m.0n1hngv, education.education.institution, Columbia University
m.04lnrwj, education.education.institution, Columbia University
m.0dwcl3f, education.education.institution, Columbia University
m.0svwprh, education.education.institution, Columbia College of Columbia University in the City of New York
m.09scccv, education.education.institution, Columbia University
m.0jzrkvh, education.education.institution, Columbia University
m.02wprdq, education.education.institution, Columbia University
m.012sbvrn, education.education.institution, Columbia University
m.0ybkkhm, education.education.institution, Columbia University
m.04hrkjt, education.education.institution, Barnard College
m.0w57dyc, education.education.institution, Columbia University
m.0n15dqn, education.education.institution, Columbia University
m.012gkyhd, education.education.institution, Columbia University
m.0hnzsnt, education.education.institution, Columbia University
m.02wpbc1, education.education.institution, Columbia University
m.04hfcjc, education.education.institution, Columbia University
m.02wnstz, education.education.institution, Columbia University
m.09hzwtv, education.education.institution, Columbia College of Columbia University in the City of New York
m.0n0zrzk, education.education.institution, Columbia University
m.02wnsrm, education.education.institution, Columbia University
m.0sw0gds, education.education.institution, Columbia College of Columbia University in the City of New York
m.0sw22jp, education.education.institution, Columbia College of Columbia University in the City of New York
m.0n42sbb, education.education.institution, Columbia University
m.04lncrc, education.education.institution, Columbia University
m.09hzn8d, education.education.institution, Columbia University
m.0svymgn, education.education.institution, Columbia College of Columbia University in the City of New York
m.0dlqdmw, education.education.institution, Columbia University
m.02wpvyl, education.education.institution, Columbia University
m.04hrymn, education.education.institution, Columbia University
m.05yyxgc, education.education.institution, Columbia University
m.0jzrklh, education.education.institution, Columbia University
m.0wlrcsb, education.education.institution, Columbia College of Columbia University in the City of New York
m.04kfryy, education.education.institution, Barnard College
m.0g5bryn, education.education.institution, Columbia University
m.0gz4dgh, education.education.institution, Columbia University
m.02nqgmw, education.educational_institution.students_graduates, Columbia University
m.04fmlls, education.education.institution, Columbia University
m.0svyrmw, education.education.institution, Columbia University
m.02wnzfh, education.education.institution, Columbia University
m.04dnxdg, education.education.institution, Columbia University
m.0czvw7c, education.education.institution, Columbia University
m.04mjgnj, education.education.institution, Columbia University
m.02wmzhp, education.education.institution, Columbia University
m.0fq7tnr, education.education.institution, Columbia University
m.04hgpvz, education.education.institution, Barnard College
m.0n0kygz, education.education.institution, Columbia University
m.04d1fxt, government.government_position_held.office_position_or_title, Undersecretary
m.0dw0scf, education.education.institution, Columbia University
m.0jzrjk8, education.education.institution, Columbia University
m.0h41znq, education.education.institution, Columbia College of Columbia University in the City of New York
m.0gggktm, education.education.institution, Columbia University
m.04hrgvg, education.education.institution, Barnard College
m.02wnjkj, education.education.institution, Columbia University
m.0ggghmd, education.education.institution, Columbia University
m.0dj15dm, education.education.institution, Columbia University
m.02wmqnb, education.education.institution, Columbia University
m.0hgtdrj, education.education.institution, Columbia University
m.02wndkc, education.education.institution, Columbia University
m.0g5bryb, education.education.institution, Columbia University
m.0bwt3nr, education.education.institution, Columbia University
m.04lntgg, education.education.institution, Columbia University
m.04hjhjt, education.education.institution, Columbia University
m.02wn8jc, education.education.institution, Columbia University
m.04hldfh, education.education.institution, Columbia University
m.0mzvnwc, education.education.institution, Columbia University
m.0n0mnyy, education.education.institution, Columbia University
m.0hgtgmr, education.education.institution, Columbia University
m.0n1mdfn, education.education.institution, Columbia University
m.02wnf3c, education.education.institution, Columbia University
m.0hnjbx8, education.education.institution, Columbia University
m.05yywjd, education.education.institution, Columbia University
m.0w5bdnr, education.education.institution, Columbia University
m.0gmhfqm, education.education.institution, Columbia University
m.04lnkgc, education.education.institution, Columbia University
m.02wpfmz, education.education.institution, Columbia University
Undersecretary, business.job_title.people_with_this_title, m.04bl_9y
m.0zddghj, education.education.institution, Columbia College of Columbia University in the City of New York
m.0n0ssdz, education.education.institution, Columbia College of Columbia University in the City of New York
m.0sw28d6, education.education.institution, Columbia College of Columbia University in the City of New York
m.0n4rzkv, education.education.institution, Columbia University
m.04hpnby, education.education.institution, Columbia University
m.04hmf3h, education.education.institution, Columbia University
m.04kfrcj, education.education.institution, Columbia University
m.04hqnxt, education.education.institution, Columbia University
m.02wpfqh, education.education.institution, Columbia University
m.09vjhqd, education.education.institution, Columbia University
m.0sw2cy2, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wnhdd, education.education.institution, Columbia University
m.04hfhnt, education.education.institution, Columbia University
Undersecretary, common.topic.notable_for, g.12599jlsx
m.0w5mqnm, education.education.institution, Columbia University
m.09vmjtg, education.education.institution, Columbia College of Columbia University in the City of New York
m.01112hhh, education.education.institution, Columbia College of Columbia University in the City of New York
m.0h9bdwz, education.education.institution, Columbia University
m.04hqtls, education.education.institution, Barnard College
m.0n16sbh, education.education.institution, Barnard College
m.0sw1blw, education.education.institution, Columbia College of Columbia University in the City of New York
m.0ggghpq, education.education.institution, Columbia University
m.02wmvdb, education.education.institution, Columbia University
m.04fs8jy, education.education.institution, Columbia University
m.02wmqhr, education.education.institution, Columbia University
m.0jzrrdn, education.education.institution, Columbia University
m.04hrfcs, education.education.institution, Columbia University
m.0w5hkrz, education.education.institution, Columbia University
Undersecretary, business.job_title.people_with_this_title, m.04fwfcw
m.02wpjkj, education.education.institution, Columbia University
m.02wnnqh, education.education.institution, Columbia University
m.05yzfhd, education.education.institution, Columbia University
m.0pbygzm, education.education.institution, Columbia University
m.0gmjksz, education.education.institution, Columbia University
m.02wmzy8, education.education.institution, Columbia University
m.02nqgmw, education.education.institution, Columbia University
m.0wkdssr, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wnm7b, education.education.institution, Columbia University
Undersecretary, government.government_position_held.basic_title, m.0wzl8h_
m.09vjjkz, education.education.institution, Columbia University
m.04lnybv, education.education.institution, Columbia University
m.0fs3qsc, education.education.institution, Columbia University
m.04zddk5, education.education.institution, Columbia University
m.04lpfwh, education.education.institution, Columbia University
m.0znmjkd, education.education.institution, Columbia University
m.02wnyny, education.education.institution, Columbia University
m.05yyy24, education.education.institution, Columbia University
m.02wmry3, education.education.institution, Columbia University
m.0svy6ys, education.education.institution, Columbia College of Columbia University in the City of New York
m.09vjdwb, education.education.institution, Columbia University
m.02wmzjb, education.education.institution, Columbia University
m.0h9bcs6, education.education.institution, Columbia University
m.05yywqd, education.education.institution, Columbia University
m.04bl_9y, business.employment_tenure.title, Undersecretary
m.0h1jrzr, education.education.institution, Columbia University
m.07y4dmr, education.education.institution, Columbia University
m.0svybjh, education.education.institution, Columbia University
m.04kfs6c, education.education.institution, Columbia University
m.02wnlsb, education.education.institution, Columbia University
m.09hxxsx, education.education.institution, Columbia College of Columbia University in the City of New York
m.0123wtt9, education.education.institution, Columbia College of Columbia University in the City of New York
m.04hms8j, education.education.institution, Barnard College
Undersecretary, government.government_office_or_title.office_holders, m.04d1fxt
m.04hks0c, education.education.institution, Barnard College
m.0jzrmsq, education.education.institution, Columbia University
m.02wnl3b, education.education.institution, Columbia University
m.02wmyd4, education.education.institution, Columbia University
Undersecretary, government.government_office_category.officeholders, m.0wzl8h_
m.0w5jkdx, education.education.institution, Columbia University
m.0svyv4b, education.education.institution, Columbia University
m.0n0rdyh, education.education.institution, Columbia University
m.0zsbdht, education.education.institution, Columbia University
m.04mjgdn, education.education.institution, Columbia University
m.0n0rgqh, education.education.institution, Columbia University
m.02wnf9c, education.education.institution, Columbia University
m.04yswpn, education.education.institution, Columbia University
m.0h57ttl, education.education.institution, Columbia University
m.02wnyyc, education.education.institution, Columbia University
m.0gggdyw, education.education.institution, Columbia University
m.0svzhqm, education.education.institution, Columbia College of Columbia University in the City of New York
m.02wn19k, education.education.institution, Columbia College of Columbia University in the City of New York
m.0n1kjkr, education.education.institution, Columbia University
m.0n1lhrf, education.education.institution, Columbia University
m.02wmrjc, education.education.institution, Columbia University
m.0sw3myp, education.education.institution, Columbia College of Columbia University in the City of New York
m.04lnwqh, education.education.institution, Columbia University
m.0zrjqyf, education.education.institution, Columbia University
m.0jzrmxm, education.education.institution, Columbia University
m.09vjk8c, education.education.institution, Columbia University
m.02wprs7, education.education.institution, Columbia University
m.0n0zcnn, education.education.institution, Columbia College of Columbia University in the City of New York
m.0wjy6zc, education.education.institution, Columbia University
m.02wnj8b, education.education.institution, Columbia University
m.05yzp8c, education.education.institution, Columbia University
m.04ynvhj, education.education.institution, Columbia University
m.04lnbbb, education.education.institution, Columbia University
m.02wmqjd, education.education.institution, Columbia University
m.0jzrq3c, education.education.institution, Columbia University
m.0gggh9b, education.education.institution, Columbia University
m.063vhtb, education.education.institution, Columbia University
m.02wpfhk, education.education.institution, Columbia University
m.0n15kyd, education.education.institution, Columbia College of Columbia University in the City of New York
m.04hn4qr, education.education.institution, Columbia University
m.04hfjzl, education.education.institution, Columbia University
m.03lcdn8, education.education.institution, Barnard College
m.04hghns, education.education.institution, Columbia University
m.02wmwnk, education.education.institution, Columbia University
Undersecretary, common.topic.notable_types, Job title
m.02wnshy, education.education.institution, Columbia University
m.02wnfqb, education.education.institution, Columbia University
m.0b78myb, education.education.institution, Columbia College of Columbia University in the City of New York
m.0k3fjky, education.education.institution, Columbia University
m.02wmrmy, education.education.institution, Columbia University
g.11bc82vfrz, education.education.institution, Columbia University
m.0jzrld8, education.education.institution, Columbia University
Undersecretary, business.job_title.people_with_this_title, m.0gh3tby
m.05yyvvy, education.education.institution, Columbia University
m.04hfqbj, education.education.institution, Columbia University
m.0sw2sb4, education.education.institution, Columbia College of Columbia University in the City of New York
m.05yzthb, education.education.institution, Columbia University
m.02wnrnk, education.education.institution, Columbia University
m.0dlqdmh, education.education.institution, Columbia University
Undersecretary, base.schemastaging.context_name.pronunciation, g.125_r97f7
m.09vjbls, education.education.institution, Columbia University
m.0n0y3nb, education.education.institution, Columbia University
m.06zy3yn, education.education.institution, Columbia University
m.04lp8bz, education.education.institution, Columbia University
m.0n0lbnz, education.education.institution, Columbia College of Columbia University in the City of New York
m.0svymvw, education.education.institution, Columbia College of Columbia University in the City of New York
m.02kdrrf, education.education.institution, Columbia University
m.04hsbqh, education.education.institution, Barnard College
m.0jzrqnd, education.education.institution, Columbia University
m.0dw0qzm, education.education.institution, Columbia University

Answer: Columbia University