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: Which university did the speaker in the 70th anniversary of D-day and the Battle or Normandy graduate from? 
Knowledge Triplets: m.02wnq8z, education.education.institution, Columbia University
m.07y4grx, education.education.institution, Columbia University
m.09vj8w9, education.education.institution, Columbia University
m.02wnz81, education.education.institution, Columbia University
m.05yyy89, education.education.institution, Columbia University
m.02wnr99, education.education.institution, Columbia University
m.05yz8yw, education.education.institution, Columbia University
m.03p72f7, education.education.institution, Columbia University
m.012r349j, education.education.institution, Columbia University
m.01078lzx, education.education.institution, Columbia University
70th anniversary of D-Day and the Battle of Normandy, event.public_speaking_event.speech_presentation_discussion, m.010r243f
m.08d7nd_, education.education.institution, Columbia University
m.09vjkz_, education.education.institution, Columbia University
m.09vj9t5, education.education.institution, Columbia University
m.0667zvh, education.education.institution, Columbia University
m.05yz88q, education.education.institution, Columbia University
m.04m21zw, education.education.institution, Columbia University
m.02wpbd5, education.education.institution, Columbia University
m.09sc7zw, education.education.institution, Columbia University
m.02wns4d, education.education.institution, Columbia University
m.010ckm_c, education.education.institution, Columbia University
m.03p71w8, education.education.institution, Columbia University
m.02wpt7d, education.education.institution, Columbia University
m.02sg7m5, education.education.institution, Columbia University
m.0648qwx, education.education.institution, Columbia University
m.02wpm73, education.education.institution, Columbia University
m.05yy_j7, education.education.institution, Columbia University
m.0667r0b, education.education.institution, Columbia University
m.03p72t8, education.education.institution, Columbia University
m.02wn8gw, education.education.institution, Columbia University
m.09vjd7w, education.education.institution, Columbia University
m.02wmw7q, education.education.institution, Columbia University
m.0gxsdd7, education.education.institution, Columbia University
m.03p73f8, education.education.institution, Columbia University
m.079c89v, education.education.institution, Columbia University
m.07yy3y5, education.education.institution, Columbia University
m.09j5d9z, education.education.institution, Columbia University
m.09vj61b, education.education.institution, Columbia University
m.0sv_d_c, education.education.institution, Columbia University
m.012j11h5, education.education.institution, Columbia University
m.066817y, education.education.institution, Columbia University
m.09vjll7, education.education.institution, Columbia University
m.01016t36, education.education.institution, Columbia University
m.0_d721v, education.education.institution, Columbia University
m.03p7367, education.education.institution, Columbia University
m.063vhtb, education.education.institution, Columbia University
m.05yz82t, education.education.institution, Columbia University
m.05y_7d3, education.education.institution, Columbia University
m.010g36zr, education.education.institution, Columbia University
m.02wpf49, education.education.institution, Columbia University
m.03p72xd, education.education.institution, Columbia University
m.07y4fj2, education.education.institution, Columbia University
m.01060h7z, education.education.institution, Columbia University
m.03p723d, education.education.institution, Columbia University
m.02wp9mq, education.education.institution, Columbia University
m.04m5w9j, education.education.institution, Columbia University
m.09sc7x5, education.education.institution, Columbia University
Bachelor of Arts, education.education.degree, m.02wn48x
m.02wpft3, education.education.institution, Columbia University
m.02nqgmw, education.educational_institution.students_graduates, Columbia University
m.03p721_, education.education.institution, Columbia University
m.02wn8w_, education.education.institution, Columbia University
m.02wnf1d, education.education.institution, Columbia University
m.0101mb9t, education.education.institution, Columbia University
m.03p72r7, education.education.institution, Columbia University
m.065mts8, education.education.institution, Columbia University
m.03p72y5, education.education.institution, Columbia University
m.03p71tw, education.education.institution, Columbia University
m.0667h9y, education.education.institution, Columbia University
m.01012yys, education.education.institution, Columbia University
m.012nkg6j, education.education.institution, Columbia University
m.05y_4h3, education.education.institution, Columbia University
m.03p72yb, education.education.institution, Columbia University
m.02wnztd, education.education.institution, Columbia University
m.03p71wf, education.education.institution, Columbia University
m.09j53jd, education.education.institution, Columbia University
m.01049q5h, education.education.institution, Columbia University
m.02wm_7w, education.education.institution, Columbia University
m.09dx683, education.education.institution, Columbia University
m.02wn8qy, education.education.institution, Columbia University
m.03p71zw, education.education.institution, Columbia University
m.0667nj9, education.education.institution, Columbia University
m.03p72d4, education.education.institution, Columbia University
m.02wmt4d, education.education.institution, Columbia University
m.03p72yh, education.education.institution, Columbia University
m.010ghxjg, education.education.institution, Columbia University
m.07y4fxb, education.education.institution, Columbia University
m.02wmznn, education.education.institution, Columbia University
m.010d932j, education.education.institution, Columbia University
m.03p71y9, education.education.institution, Columbia University
m.0101n1lq, education.education.institution, Columbia University
m.02wnf98, education.education.institution, Columbia University
m.0648b_f, education.education.institution, Columbia University
m.02wpt87, education.education.institution, Columbia University
m.0101j1xg, education.education.institution, Columbia University
m.02wn9yb, education.education.institution, Columbia University
m.0k3fk87, education.education.institution, Columbia University
m.02wmyz1, education.education.institution, Columbia University
m.02wn9d0, education.education.institution, Columbia University
m.048zs9t, education.education.institution, Columbia University
m.03p72h8, education.education.institution, Columbia University
m.0667yvf, education.education.institution, Columbia University
m.06wjf21, education.education.institution, Columbia University
m.09vjk2j, education.education.institution, Columbia University
m.09j5mrk, education.education.institution, Columbia University
m.0667yyy, education.education.institution, Columbia University
m.03n8ghx, education.education.institution, Columbia University
m.079f361, education.education.institution, Columbia University
m.09j5ht3, education.education.institution, Columbia University
m.08d7r4q, education.education.institution, Columbia University
m.0101bvtn, education.education.institution, Columbia University
m.03p71vh, education.education.institution, Columbia University
m.09kg63w, education.education.institution, Columbia University
m.03p721c, education.education.institution, Columbia University
m.02wns0y, education.education.institution, Columbia University
m.0dh55_d, education.education.institution, Columbia University
m.01012pjj, education.education.institution, Columbia University
m.02wmz41, education.education.institution, Columbia University
m.0103thgn, education.education.institution, Columbia University
m.05y_751, education.education.institution, Columbia University
m.02wpfqh, education.education.institution, Columbia University
m.02wps88, education.education.institution, Columbia University
m.02wmz66, education.education.institution, Columbia University
Sword Beach, location.location.events, 70th anniversary of D-Day and the Battle of Normandy
m.010fytd5, education.education.institution, Columbia University
m.02wnd7b, education.education.institution, Columbia University
Barack Obama, people.person.education, m.02nqgmw
m.01064t9y, education.education.institution, Columbia University
m.0123tx0d, education.education.institution, Columbia University
m.0667hny, education.education.institution, Columbia University
m.062yw9y, education.education.institution, Columbia University
m.02wp9gg, education.education.institution, Columbia University
m.064y07d, education.education.institution, Columbia University
70th anniversary of D-Day and the Battle of Normandy, time.event.locations, Sword Beach
m.05y_d8l, education.education.institution, Columbia University
m.03l67h4, education.education.institution, Columbia University
m.09vj876, education.education.institution, Columbia University
m.0z_86m8, education.education.institution, Columbia University
m.062yyh0, education.education.institution, Columbia University
m.012vw7zh, education.education.institution, Columbia University
m.03p7208, education.education.institution, Columbia University
m.02wp999, education.education.institution, Columbia University
m.02sr3v9, education.education.institution, Columbia University
m.03p73j7, education.education.institution, Columbia University
m.012p0hmh, education.education.institution, Columbia University
m.03p7237, education.education.institution, Columbia University
m.0101lf8x, education.education.institution, Columbia University
m.03p71z7, education.education.institution, Columbia University
m.03p73b9, education.education.institution, Columbia University
m.010r243f, event.speech_or_presentation.event, 70th anniversary of D-Day and the Battle of Normandy
m.0sv_dnb, education.education.institution, Columbia University
m.03p736d, education.education.institution, Columbia University
m.09vjd04, education.education.institution, Columbia University
m.02wn8r0, education.education.institution, Columbia University
m.07lgd23, education.education.institution, Columbia University
m.02wmt4s, education.education.institution, Columbia University
m.02wn6f9, education.education.institution, Columbia University
m.0667twb, education.education.institution, Columbia University
m.02_9f7v, education.education.institution, Columbia University
m.03p7211, education.education.institution, Columbia University
m.09sc84h, education.education.institution, Columbia University
m.07n73zg, education.education.institution, Columbia University
m.02wn9tw, education.education.institution, Columbia University
m.02wpfmz, education.education.institution, Columbia University
m.02wpxr7, education.education.institution, Columbia University
m.02wnx67, education.education.institution, Columbia University
m.05y_8vw, education.education.institution, Columbia University
m.02wp9yg, education.education.institution, Columbia University
m.03p72yz, education.education.institution, Columbia University
m.02wnf8j, education.education.institution, Columbia University
m.064zt_f, education.education.institution, Columbia University
m.03p73gj, education.education.institution, Columbia University
70th anniversary of D-Day and the Battle of Normandy, event.speech_or_presentation.event, m.010r243f
m.02wmyht, education.education.institution, Columbia University
m.0n0hts7, education.education.institution, Columbia University
m.09vjm5d, education.education.institution, Columbia University
m.012fzn28, education.education.institution, Columbia University
m.04hf6_d, education.education.institution, Columbia University
m.0_xvd8_, education.education.institution, Columbia University
m.03p721p, education.education.institution, Columbia University
m.02wmzj4, education.education.institution, Columbia University
m.02sjh53, education.education.institution, Columbia University
m.062yv_f, education.education.institution, Columbia University
m.02wpt8f, education.education.institution, Columbia University
m.04hr8cw, education.education.institution, Columbia University
m.02kq08w, education.education.institution, Columbia University
m.02wp8jr, education.education.institution, Columbia University
m.0102zhrg, education.education.institution, Columbia University
m.0n1b5_d, education.education.institution, Columbia University
m.0svz_d_, education.education.institution, Columbia University
m.07ss3q8, education.education.institution, Columbia University
m.05yz8m1, education.education.institution, Columbia University
m.062yw1m, education.education.institution, Columbia University
m.0103rbxw, education.education.institution, Columbia University
m.02_3svx, education.education.institution, Columbia University
m.03p71xj, education.education.institution, Columbia University
m.02wmyh1, education.education.institution, Columbia University
m.03p72mh, education.education.institution, Columbia University
m.010lfv4d, education.education.institution, Columbia University
m.0667m0x, education.education.institution, Columbia University
m.09j5m7h, education.education.institution, Columbia University
m.02wmz1j, education.education.institution, Columbia University
m.02wpfhk, education.education.institution, Columbia University
m.0770dww, education.education.institution, Columbia University
m.02wn9_d, education.education.institution, Columbia University
m.05yzfk7, education.education.institution, Columbia University
m.03p72rw, education.education.institution, Columbia University
m.02wmt4z, education.education.institution, Columbia University
m.03p72n8, education.education.institution, Columbia University
m.03p71yg, education.education.institution, Columbia University
m.0101ht68, education.education.institution, Columbia University
m.02wnh78, education.education.institution, Columbia University
m.07lgg83, education.education.institution, Columbia University
m.062yxyg, education.education.institution, Columbia University
m.08d7x_c, education.education.institution, Columbia University
m.0770q1d, education.education.institution, Columbia University
m.0667lwh, education.education.institution, Columbia University
m.02wp8y9, education.education.institution, Columbia University
m.08d7xx6, education.education.institution, Columbia University
m.0101m23f, education.education.institution, Columbia University
m.06681b8, education.education.institution, Columbia University
m.03p73h9, education.education.institution, Columbia University
m.0667rwm, education.education.institution, Columbia University
m.03p72wm, education.education.institution, Columbia University
m.05nwmf7, education.education.institution, Columbia University
m.02_6r81, education.education.institution, Columbia University
m.010fny6h, education.education.institution, Columbia University
m.02wp8vw, education.education.institution, Columbia University
m.059rtmn, education.education.institution, Columbia University
m.062yw09, education.education.institution, Columbia University
m.02wmyd4, education.education.institution, Columbia University
m.0667vwh, education.education.institution, Columbia University
m.02wmwh6, education.education.institution, Columbia University
m.02wnm9h, education.education.institution, Columbia University
m.02wmz4m, education.education.institution, Columbia University
m.02wp8mr, education.education.institution, Columbia University
m.03p71_h, education.education.institution, Columbia University
m.07y4hh5, education.education.institution, Columbia University
m.0_kx_70, education.education.institution, Columbia University
m.02wn8tk, education.education.institution, Columbia University
m.02wmqhr, education.education.institution, Columbia University
m.02wmr1y, education.education.institution, Columbia University
m.03p72z8, education.education.institution, Columbia University
m.0667y_9, education.education.institution, Columbia University
m.0667zn8, education.education.institution, Columbia University
m.05yywjd, education.education.institution, Columbia University
m.03p72_c, education.education.institution, Columbia University
m.02wmry3, education.education.institution, Columbia University
m.0101mjb_, education.education.institution, Columbia University
m.0667kgj, education.education.institution, Columbia University
m.05y_5f8, education.education.institution, Columbia University
m.010ft1f7, education.education.institution, Columbia University
m.02wmrzj, education.education.institution, Columbia University
m.09vj8b9, education.education.institution, Columbia University
m.02sfd1b, education.education.institution, Columbia University
m.0667j8j, education.education.institution, Columbia University
m.02wn3m4, education.education.institution, Columbia University
m.0101h_7t, education.education.institution, Columbia University
m.02wmzy8, education.education.institution, Columbia University
m.02_7jm_, education.education.institution, Columbia University
m.02wn71q, education.education.institution, Columbia University
m.0123xq89, education.education.institution, Columbia University
m.01010brs, education.education.institution, Columbia University
m.012n3trm, education.education.institution, Columbia University
m.02nqgmw, education.education.institution, Columbia University
m.09vjd3y, education.education.institution, Columbia University
m.09vj8zj, education.education.institution, Columbia University
m.03p72mz, education.education.institution, Columbia University
m.0667v5y, education.education.institution, Columbia University
m.011sm43f, education.education.institution, Columbia University
m.09vj8t4, education.education.institution, Columbia University
m.03p71zq, education.education.institution, Columbia University
m.02wp01j, education.education.institution, Columbia University
70th anniversary of D-Day and the Battle of Normandy, common.topic.notable_for, g.11bbqdm6bm
m.0667h_f, education.education.institution, Columbia University
m.0107d66w, education.education.institution, Columbia University
m.0667xw9, education.education.institution, Columbia University
m.0105v127, education.education.institution, Columbia University
m.0667j9f, education.education.institution, Columbia University
m.0646n8f, education.education.institution, Columbia University
m.02wmqjd, education.education.institution, Columbia University
m.0667m_d, education.education.institution, Columbia University
m.02wn8f8, education.education.institution, Columbia University
m.010r243f, event.public_speaker.speeches_or_presentations, Barack Obama
m.07n73z7, education.education.institution, Columbia University
m.01011l6f, education.education.institution, Columbia University
m.02wp4fd, education.education.institution, Columbia University
m.0667q1f, education.education.institution, Columbia University
m.03p72fd, education.education.institution, Columbia University
m.07sk4y9, education.education.institution, Columbia University
m.02wp2s7, education.education.institution, Columbia University
m.02wm_p8, education.education.institution, Columbia University
m.03p72d9, education.education.institution, Columbia University
m.010f3rt9, education.education.institution, Columbia University
m.02wp897, education.education.institution, Columbia University
m.02wn48x, education.educational_institution.students_graduates, Columbia University
m.02wn4yj, education.education.institution, Columbia University
m.010g0nt2, education.education.institution, Columbia University
m.02wn8g9, education.education.institution, Columbia University
m.0667s2d, education.education.institution, Columbia University
m.02kq26y, education.education.institution, Columbia University
m.02wnqy9, education.education.institution, Columbia University
m.0109tsnf, education.education.institution, Columbia University
m.0667r1s, education.education.institution, Columbia University
m.03p71y4, education.education.institution, Columbia University
m.09vj882, education.education.institution, Columbia University
m.0667x9w, education.education.institution, Columbia University
m.0_xtq_d, education.education.institution, Columbia University
m.09j49y1, education.education.institution, Columbia University
m.02wp89q, education.education.institution, Columbia University
m.02wp61f, education.education.institution, Columbia University
m.02wn_d4, education.education.institution, Columbia University
m.02wmqgj, education.education.institution, Columbia University
m.02wmw9s, education.education.institution, Columbia University
m.02wm_r1, education.education.institution, Columbia University
m.03p72hr, education.education.institution, Columbia University
m.04hrr8_, education.education.institution, Columbia University
m.012nkn67, education.education.institution, Columbia University
m.07y4fnd, education.education.institution, Columbia University
m.0104snnc, education.education.institution, Columbia University
m.01021wg9, education.education.institution, Columbia University
m.0667y5w, education.education.institution, Columbia University
m.02wn7y8, education.education.institution, Columbia University
m.03p71vz, education.education.institution, Columbia University
m.02wprdq, education.education.institution, Columbia University
m.0668216, education.education.institution, Columbia University
m.05yyq_c, education.education.institution, Columbia University
70th anniversary of D-Day and the Battle of Normandy, common.topic.notable_types, Public speaking event
m.07y4gw_, education.education.institution, Columbia University
m.02wmyy3, education.education.institution, Columbia University
m.09vmr7q, education.education.institution, Columbia University
m.02wmt68, education.education.institution, Columbia University
m.02wmtrj, education.education.institution, Columbia University
m.02wn1_d, education.education.institution, Columbia University
m.0667yfz, education.education.institution, Columbia University
m.05y_48d, education.education.institution, Columbia University
m.09vjnk7, education.education.institution, Columbia University
m.03p71yy, education.education.institution, Columbia University
m.05y_dvl, education.education.institution, Columbia University
m.02wmq81, education.education.institution, Columbia University
m.02wmrmy, education.education.institution, Columbia University
m.02wp96d, education.education.institution, Columbia University
m.05yz3hj, education.education.institution, Columbia University
m.0667vfd, education.education.institution, Columbia University
m.03p7216, education.education.institution, Columbia University
m.0667j97, education.education.institution, Columbia University
m.02wp7dn, education.education.institution, Columbia University
m.0101p9v5, education.education.institution, Columbia University
m.09sc7qx, education.education.institution, Columbia University
m.02b88f6, education.education.institution, Columbia University
m.03p721j, education.education.institution, Columbia University
m.09vjn1n, education.education.institution, Columbia University
m.0667h_v, education.education.institution, Columbia University
m.02wmy4y, education.education.institution, Columbia University
m.02kq208, education.education.institution, Columbia University
m.03p73jd, education.education.institution, Columbia University
m.0n0m7_d, education.education.institution, Columbia University
m.09vjh71, education.education.institution, Columbia University
m.02wmvn9, education.education.institution, Columbia University
m.02wmyjg, education.education.institution, Columbia University
m.02wnr77, education.education.institution, Columbia University
m.0102nv58, education.education.institution, Columbia University
m.03p71wx, education.education.institution, Columbia University
m.02wnx07, education.education.institution, Columbia University
m.0101p0m5, education.education.institution, Columbia University
m.02wprs7, education.education.institution, Columbia University
m.09vjktd, education.education.institution, Columbia University
m.02wnb89, education.education.institution, Columbia University
m.09hzn8d, education.education.institution, Columbia University
m.02wpfd5, education.education.institution, Columbia University
m.0101mwvz, education.education.institution, Columbia University
m.03q19g7, education.education.institution, Columbia University
m.0667t8z, education.education.institution, Columbia University
m.02wprt5, education.education.institution, Columbia University
m.0_ld1_d, education.education.institution, Columbia University
m.07yy5h3, education.education.institution, Columbia University
m.0109_01f, education.education.institution, Columbia University
m.02wmwv8, education.education.institution, Columbia University
m.02wmt3r, education.education.institution, Columbia University
m.062yz41, education.education.institution, Columbia University
m.02wp3fj, education.education.institution, Columbia University
m.09vjn2z, education.education.institution, Columbia University
m.02wmrj2, education.education.institution, Columbia University
m.05yyy73, education.education.institution, Columbia University
m.06683hr, education.education.institution, Columbia University
m.09j5hf3, education.education.institution, Columbia University

Answer: Columbia University