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 public speaker who spoke about Education Reform received his undergraduate degree from which university? 
Knowledge Triplets: m.04q12_3, education.education.institution, Columbia University
m.0wjwz25, education.education.degree, Doctorate
Education reform, book.book_subject.works, Left Back: A Century of Failed School Reforms
m.02wng19, education.education.institution, Columbia University
m.04kfqw7, education.education.degree, Bachelor of Arts
m.012l19w1, education.education.degree, PhD
m.0cpfzhg, education.education.degree, Bachelor of Arts
m.04hf9m0, education.education.degree, Bachelor of Arts
m.0bmyzt8, education.education.degree, Bachelor of Arts
m.04htlv2, education.education.institution, Columbia University
m.0104lf16, education.education.institution, Columbia University
m.02wpmly, education.education.degree, Bachelor of Fine Arts
m.0gggdyw, education.education.institution, Columbia University
m.04htm02, education.education.institution, Columbia University
m.0w570_b, education.education.institution, Columbia University
m.0n1jr14, education.education.institution, Columbia University
m.04hbdn_, education.education.institution, Columbia University
m.0zsbdht, education.education.degree, PhD
m.0zsmg3_, education.education.degree, Bachelor of Arts
m.02wns95, education.education.degree, Bachelor of Arts
m.07yy3y5, education.education.institution, Columbia University
m.09vjg16, education.education.institution, Columbia University
m.04yt0j8, education.education.degree, PhD
m.04hmf3h, education.education.institution, Columbia University
m.04kfrcj, education.education.degree, Bachelor of Arts
m.0gggktm, education.education.institution, Columbia University
m.0gggl16, education.education.institution, Columbia University
m.02wnms6, education.education.institution, Columbia University
m.03p7208, education.education.institution, Columbia University
m.0n1h_29, education.education.institution, Columbia University
m.03p7333, education.education.degree, MBA
m.0n0ylh8, education.education.institution, Columbia University
m.05yzyp8, education.education.institution, Columbia University
Education reform, event.speech_topic.speeches_or_presentations_on_this_topic, m.0j31vdq
m.0jzrkd_, education.education.institution, Columbia University
m.0czvwch, education.education.institution, Columbia University
m.02wp3z3, education.education.degree, Doctorate
m.05yzr76, education.education.institution, Columbia University
m.02wmyz1, education.education.degree, Bachelor of Arts
m.0ggggd_, education.education.institution, Columbia University
Columbia University, education.university.number_of_undergraduates, m.02k6vt9
m.0jzrlrf, education.education.institution, Columbia University
m.02wpm73, education.education.degree, PhD
m.02wpxr1, education.education.degree, Bachelor of Arts
m.010bc9j4, education.education.degree, PhD
m.07sk4x4, education.education.degree, Doctorate
m.0667y_9, education.education.institution, Columbia University
m.05yyy89, education.education.institution, Columbia University
m.0zffgd4, education.education.institution, Columbia University
m.05yyzp8, education.education.institution, Columbia University
m.02wnyh3, education.education.institution, Columbia University
m.0w57855, education.education.institution, Columbia University
m.0jzrlsz, education.education.institution, Columbia University
m.02wn_56, education.education.institution, Columbia University
m.05yzc17, education.education.institution, Columbia University
m.0jzrjk8, education.education.institution, Columbia University
m.02wn914, education.education.institution, Columbia University
m.04ys_p_, education.education.institution, Columbia University
m.07yy5h3, education.education.institution, Columbia University
m.0dw0sq5, education.education.institution, Columbia University
m.04d0_xv, education.education.institution, Columbia University
m.03p726_, education.education.institution, Columbia University
m.02wnx67, education.education.degree, Bachelor of Arts
m.05yy_ll, education.education.institution, Columbia University
m.0dff_17, education.education.institution, Columbia University
m.02wn857, education.education.degree, PhD
m.0mzmh14, education.education.institution, Columbia University
m.049y429, education.education.degree, Bachelor of Arts
m.0jzrrwl, education.education.degree, Bachelor of Arts
m.05t6p68, education.education.degree, PhD
m.0whtnsv, education.education.institution, Columbia University
m.05yz24y, education.education.institution, Columbia University
m.0znmjkd, education.education.institution, Columbia University
m.05yzdgd, education.education.institution, Columbia University
m.04hwz_3, education.education.institution, Columbia University
m.04hllds, education.education.institution, Columbia University
m.0znmjkd, education.education.degree, PhD
m.04fl3r2, education.education.degree, Doctorate
m.0j31vdq, event.speech_or_presentation.speech_topic, Education reform
m.06zy473, education.education.institution, Columbia University
m.0_g5036, education.education.degree, Bachelor of Arts
m.02wnq_8, education.education.institution, Columbia University
m.0zmjm88, education.education.degree, PhD
m.010f357_, education.education.degree, Bachelor of Arts
m.07zqq_8, education.education.institution, Columbia University
m.0wlqbry, education.education.institution, Columbia University
m.05y_102, education.education.institution, Columbia University
m.062yz41, education.education.degree, Doctorate
m.09hzn8d, education.education.institution, Columbia University
m.04hldyr, education.education.institution, Columbia University
m.05yyzl9, education.education.institution, Columbia University
m.02wn487, education.education.degree, Bachelor of Arts
m.05yzm_8, education.education.institution, Columbia University
m.05yy_j7, education.education.institution, Columbia University
m.03p72t8, education.education.institution, Columbia University
m.02wlq32, education.education.degree, Doctorate
m.05yyq_c, education.education.institution, Columbia University
m.0svzhy2, education.education.institution, Columbia University
m.0zmppr4, education.education.degree, Bachelor of Arts
m.04dnxdg, education.education.degree, Bachelor of Science
m.04h9z99, education.education.institution, Columbia University
m.04hry17, education.education.institution, Columbia University
m.04ls7y9, education.education.institution, Columbia University
m.04lp7y8, education.education.institution, Columbia University
m.0dh5771, education.education.institution, Columbia University
m.0w575y9, education.education.institution, Columbia University
m.03p7309, education.education.degree, PhD
m.07sk85d, education.education.institution, Columbia University
m.03p42k3, education.education.degree, Doctorate
m.063vhtb, education.education.degree, Bachelor's degree
m.07llr85, education.education.institution, Columbia University
m.07yy3y5, education.education.degree, Bachelor of Arts
m.02wnhdd, education.education.institution, Columbia University
m.04htm02, education.education.degree, PhD
m.0jzrkww, education.education.institution, Columbia University
m.09dx683, education.education.institution, Columbia University
m.04m6010, education.education.degree, Master of Public Administration
Master of Public Administration, education.educational_degree.people_with_this_degree, m.04m6010
m.02wn73l, education.education.degree, Bachelor's degree
m.04hsmw7, education.education.institution, Columbia University
m.0n15shd, education.education.institution, Columbia University
m.03p4008, education.education.degree, Doctorate
m.05yyhd4, education.education.degree, PhD
Education reform, common.topic.article, m.02mdn
m.05yyj7m, education.education.degree, Bachelor of Arts
m.0hnjd21, education.education.institution, Columbia University
m.0dwjb21, education.education.institution, Columbia University
m.03p7237, education.education.institution, Columbia University
m.0dw0s8l, education.education.institution, Columbia University
m.0w579_r, education.education.institution, Columbia University
m.09dx683, education.education.degree, Doctorate
m.04fmll_, education.education.institution, Columbia University
m.0jzrpb8, education.education.institution, Columbia University
m.04fv969, education.education.degree, PhD
Columbia University, education.university.number_of_undergraduates, m.0zn_hm_
m.02wn1y1, education.education.degree, Doctorate
m.01049q5h, education.education.degree, Doctorate
Education reform, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
m.02wplk5, education.education.degree, Bachelor of Arts
m.02wpq_6, education.education.institution, Columbia University
m.04hwhv6, education.education.institution, Columbia University
m.04hqsn7, education.education.institution, Columbia University
m.02wmyht, education.education.institution, Columbia University
m.04hnj_g, education.education.institution, Columbia University
m.0h57ttl, education.education.institution, Columbia University
Columbia University, education.university.number_of_undergraduates, m.0zntf3b
m.0zrjkbl, education.education.institution, Columbia University
m.02wn7y8, education.education.degree, Master of Science
m.0dw0s6y, education.education.institution, Columbia University
m.03p72h3, education.education.degree, PhD
m.02b88f6, education.education.degree, Bachelor's degree
m.04mdln4, education.education.institution, Columbia University
m.0hnmwqj, education.education.institution, Columbia University
m.0fq7yd7, education.education.degree, Bachelor of Arts
m.02whhyd, education.education.degree, Doctorate
m.05yzdsz, education.education.institution, Columbia University
m.0gmhhcz, education.education.degree, Bachelor of Arts
m.0jzrjkf, education.education.institution, Columbia University
m.0svybjh, education.education.institution, Columbia University
m.067wh74, education.education.institution, Columbia University
m.0jn4mw7, education.education.degree, Bachelor of Arts
m.0svydgt, education.education.institution, Columbia University
m.04ysvwp, education.education.institution, Columbia University
m.02wng16, education.education.institution, Columbia University
m.012r33x1, education.education.degree, Master of Public Health
m.05yyht2, education.education.institution, Columbia University
m.03p72_v, education.education.institution, Columbia University
m.05yywjd, education.education.institution, Columbia University
m.012nkn67, education.education.institution, Columbia University
m.06zy269, education.education.institution, Columbia University
m.04fntnq, education.education.degree, Bachelor of Arts
m.0gmhk99, education.education.institution, Columbia University
m.03p7203, education.education.institution, Columbia University
m.0jzrs85, education.education.institution, Columbia University
m.0svyd49, education.education.institution, Columbia University
Left Back: A Century of Failed School Reforms, book.author.works_written, Diane Ravitch
m.02wn_83, education.education.institution, Columbia University
m.0nbm3_9, education.education.institution, Columbia University
Master of Public Health, education.educational_degree.people_with_this_degree, m.012r33x1
m.05yz9n3, education.education.degree, PhD
Bachelor of Arts, education.educational_degree.people_with_this_degree, m.02wn487
m.062yz41, education.education.institution, Columbia University
m.0jzrkvh, education.education.institution, Columbia University
m.0zdwf_2, education.education.institution, Columbia University
m.02wn347, education.education.institution, Columbia University
m.0jzrklh, education.education.institution, Columbia University
m.02wnhk8, education.education.degree, Bachelor's degree
m.05yzqn8, education.education.institution, Columbia University
m.0nd8416, education.education.institution, Columbia University
m.010vsw_v, education.education.institution, Columbia University
m.0ggggyg, education.education.institution, Columbia University
m.0fq7yn8, education.education.degree, Doctorate
m.0n0rt_6, education.education.institution, Columbia University
m.09vjkz_, education.education.institution, Columbia University
m.04htnrg, education.education.institution, Columbia University
m.0648n18, education.education.institution, Columbia University
m.02wpfd5, education.education.institution, Columbia University
Education reform, base.schemastaging.context_name.pronunciation, g.125_rjf_8
m.05yytr7, education.education.institution, Columbia University
m.02wnm_1, education.education.institution, Columbia University
m.0dw0kyq, education.education.institution, Columbia University
m.03q55tr, education.education.degree, Bachelor of Arts
m.0nbvtg8, education.education.degree, Bachelor of Arts
m.0667h_v, education.education.institution, Columbia University
m.03ltmny, education.education.institution, Columbia University
m.04hghns, education.education.institution, Columbia University
m.02wp699, education.education.degree, PhD
m.03p733r, education.education.degree, Bachelor of Arts
m.0dh5v81, education.education.degree, PhD
m.07y4fb7, education.education.degree, PhD
m.0w5kt_h, education.education.institution, Columbia University
m.04ysy4t, education.education.institution, Columbia University
m.02wncd9, education.education.institution, Columbia University
m.05yyhd4, education.education.institution, Columbia University
m.02wnmhd, education.education.institution, Columbia University
m.07y4gw_, education.education.institution, Columbia University
m.04zddk5, education.education.institution, Columbia University
m.02wn827, education.education.institution, Columbia University
m.0ybkkhm, education.education.institution, Columbia University
m.02wprg6, education.education.degree, Bachelor of Science
m.0101mjb_, education.education.degree, Doctorate
m.0jzrk_b, education.education.institution, Columbia University
m.0znkq0s, education.education.institution, Columbia University
m.07lgd23, education.education.institution, Columbia University
m.01048n_2, education.education.degree, PhD
m.04yswpn, education.education.institution, Columbia University
m.02wp46r, education.education.degree, Bachelor of Arts
m.02wnh78, education.education.institution, Columbia University
m.04yt039, education.education.institution, Columbia University
m.0zmjm88, education.education.institution, Columbia University
m.04fmll_, education.education.degree, Master of Arts
m.05y_4h3, education.education.institution, Columbia University
m.0bd2y85, education.education.institution, Columbia University
m.0zhz688, education.education.degree, PhD
m.04ysv28, education.education.institution, Columbia University
Education reform, common.topic.notable_types, Literature Subject
m.0bmyn08, education.education.institution, Columbia University
m.09j5hf3, education.education.degree, Bachelor of Arts
m.0w57bwm, education.education.institution, Columbia University
m.02wptf9, education.education.degree, Bachelor of Arts
m.04hfzh2, education.education.institution, Columbia University
m.02wn328, education.education.degree, PhD
m.03p7216, education.education.institution, Columbia University
m.0zjj00p, education.education.institution, Columbia University
m.02wn48x, education.education.degree, Bachelor of Arts
m.0bd3csm, education.education.institution, Columbia University
m.012dx9l7, education.education.degree, Bachelor of Arts
m.0107b004, education.education.degree, PhD
m.0wlnxd7, education.education.institution, Columbia University
m.05yzjb3, education.education.institution, Columbia University
m.04lnjt8, education.education.institution, Columbia University
m.05yys96, education.education.institution, Columbia University
m.05yz9_1, education.education.institution, Columbia University
m.03llz75, education.education.institution, Columbia University
m.04hfhnt, education.education.institution, Columbia University
Columbia University, education.university.number_of_undergraduates, m.0k9lyhd
m.04htgd6, education.education.institution, Columbia University
m.0gmjksz, education.education.institution, Columbia University
m.03p72_6, education.education.institution, Columbia University
m.0gt_09t, education.education.degree, Bachelor of Arts
m.0hnzsnt, education.education.institution, Columbia University
m.010lfv4d, education.education.degree, Doctorate
Tom Brown's School Days, film.film.subjects, Education reform
m.02wng19, education.educational_institution.students_graduates, Columbia University
m.02wpmlc, education.education.degree, Bachelor of Arts
m.02wmr1y, education.education.degree, Bachelor's degree
m.03p724b, education.education.degree, PhD
m.09scc20, education.education.institution, Columbia University
m.0gggky5, education.education.institution, Columbia University
m.04hbfm6, education.education.institution, Columbia University
m.04m18rd, education.education.institution, Columbia University
m.04hxbw8, education.education.institution, Columbia University
m.02wnbjc, education.education.degree, Bachelor of Arts
m.04yt3ht, education.education.institution, Columbia University
m.04fntny, education.education.institution, Columbia University
m.0nd8416, education.education.degree, Bachelor of Arts
m.05yzdms, education.education.institution, Columbia University
m.04fmlm6, education.education.degree, Bachelor of Arts
m.0hnjbx8, education.education.institution, Columbia University
m.04hjhjt, education.education.institution, Columbia University
m.0jzrlw3, education.education.institution, Columbia University
m.0gtzf_v, education.education.institution, Columbia University
m.04kfsgr, education.education.degree, Bachelor of Arts
m.0bmyhmp, education.education.institution, Columbia University
m.04dy4p_, education.education.degree, Bachelor of Arts
m.0w57dyc, education.education.institution, Columbia University
m.0104lf16, education.education.degree, PhD
m.065mts8, education.education.degree, Bachelor of Arts
m.0svy7y_, education.education.institution, Columbia University
m.09sd24y, education.education.institution, Columbia University
m.02wnm9h, education.education.degree, Bachelor of Arts
m.0wkdhjh, education.education.institution, Columbia University
m.040sdd5, education.education.institution, Columbia University
m.04hqylt, education.education.institution, Columbia University
m.03p71_n, education.education.degree, Bachelor's degree
m.0czvwb8, education.education.institution, Columbia University
m.02wnmg5, education.education.degree, Bachelor's degree
m.02nqgmw, education.education.degree, Bachelor of Arts
m.02wn85m, education.education.degree, Doctorate
m.02wnyh3, education.education.degree, Doctorate
m.0jzrk9h, education.education.institution, Columbia University
m.0dw0svm, education.education.institution, Columbia University
m.04hkqt8, education.education.institution, Columbia University
m.0bmyzt8, education.education.institution, Columbia University
m.04fmlm6, education.education.institution, Columbia University
m.07yh05p, education.education.degree, Bachelor of Arts
m.01048n_2, education.education.institution, Columbia University
m.02wp1_3, education.education.institution, Columbia University
m.02wnfk7, education.education.degree, Bachelor of Arts
m.077tj64, education.education.degree, Bachelor of Science
m.05yyzf3, education.education.institution, Columbia University
m.04hh_29, education.education.institution, Columbia University
m.010fytd5, education.education.degree, PhD
m.03l67h4, education.education.institution, Columbia University
m.03btl9l, education.education.degree, Bachelor of Arts
m.04dnxdg, education.education.institution, Columbia University
m.04ysy0h, education.education.institution, Columbia University
Columbia University, education.university.number_of_undergraduates, m.0h77xrj
Bachelor of Arts, education.education.degree, m.0zjj00p
m.04h9z99, education.education.degree, MBA
m.03mk_43, education.education.institution, Columbia University
m.0bx2173, education.education.institution, Columbia University
m.02sjh53, education.education.degree, Doctorate
m.04hqch7, education.education.institution, Columbia University
m.02wpqyq, education.education.degree, Bachelor of Arts
m.0jzrk8m, education.education.institution, Columbia University
m.03p72xw, education.education.degree, Bachelor of Arts
m.0gmhhpf, education.education.institution, Columbia University
m.0n0yssz, education.education.institution, Columbia University
m.04lpfwh, education.education.institution, Columbia University
m.010bcj0y, education.education.degree, PhD
m.02wn857, education.education.institution, Columbia University
m.04md9lt, education.education.institution, Columbia University
m.0hzhjkd, education.education.institution, Columbia University
m.03l67h4, education.education.degree, PhD
m.012r33x8, education.education.degree, PhD
m.01064t9y, education.education.degree, PhD
m.07lgg83, education.education.institution, Columbia University
m.0dw0sfm, education.education.institution, Columbia University
m.05y_p_1, education.education.institution, Columbia University
m.02wpc3q, education.education.degree, Bachelor of Arts
m.02wncz3, education.education.institution, Columbia University
m.04lt3y7, education.education.institution, Columbia University
m.07n73zg, education.education.degree, Bachelor of Science
m.0gmhhcz, education.education.institution, Columbia University
m.0h9bbt4, education.education.degree, PhD
m.02wnhn5, education.education.institution, Columbia University
m.04lntgg, education.education.institution, Columbia University
m.02wpy56, education.education.institution, Columbia University
m.04yt0j8, education.education.institution, Columbia University
m.0zffgd4, education.education.degree, PhD
m.02wpf13, education.education.institution, Columbia University
m.0svy0s8, education.education.institution, Columbia University
Education reform, book.book_subject.works, Left Back: A Century of Failed School Reforms
m.03p71_5, education.education.institution, Columbia University
m.05yz9n3, education.education.institution, Columbia University
Barack Obama, event.public_speaker.speeches_or_presentations, m.0j31vdq
m.0667t16, education.education.institution, Columbia University
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education reform
Education reform, film.film_subject.films, Tom Brown's School Days
m.05yyy73, education.education.institution, Columbia University
m.02wn8l_, education.education.degree, Bachelor of Arts
m.02wn487, education.education.institution, Columbia University
m.03p7338, education.education.institution, Columbia University
m.05y_48d, education.education.institution, Columbia University
m.03p72ky, education.education.institution, Columbia University
m.0zhz688, education.education.institution, Columbia University
m.05yyx85, education.education.institution, Columbia University
m.04ysw6d, education.education.institution, Columbia University
m.01033_3y, education.education.degree, PhD
m.04ystr2, education.education.institution, Columbia University
m.03p735s, education.education.degree, Bachelor of Arts
m.0jzrld8, education.education.institution, Columbia University
Diane Ravitch, education.education.student, m.02wng19
m.0hn_h89, education.education.institution, Columbia University
m.02wn207, education.education.institution, Columbia University
m.0jzrp_9, education.education.institution, Columbia University
Education reform, common.topic.notable_for, g.1257qk2wd
m.0svsndt, education.education.institution, Columbia University
m.04ynvhj, education.education.institution, Columbia University
m.06z_115, education.education.institution, Columbia University
m.03p730y, education.education.degree, PhD
m.0zfygrt, education.education.institution, Columbia University
m.0dj15dm, education.education.institution, Columbia University
m.04hrr8_, education.education.institution, Columbia University
m.0gl19ky, education.education.institution, Columbia University
m.0svzld9, education.education.institution, Columbia University
m.03p721_, education.education.institution, Columbia University
m.0w5b8bc, education.education.institution, Columbia University
m.0svzrlh, education.education.institution, Columbia University
m.0n0jz16, education.education.institution, Columbia University
m.09vjktd, education.education.institution, Columbia University
m.0w5bdnr, education.education.institution, Columbia University
m.05yyy24, education.education.institution, Columbia University
m.0107dc_2, education.education.institution, Columbia University
m.03p72b8, education.education.institution, Columbia University
m.02wn0hh, education.education.degree, PhD
m.0gx4_34, education.education.institution, Columbia University
m.0zsbdht, education.education.institution, Columbia University
m.04lnz97, education.education.institution, Columbia University
m.02wpvg6, education.education.degree, Bachelor of Arts
m.02wnkym, education.education.institution, Columbia University

Answer: Columbia University