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: Find the speaker of teh 70th anniversary of the Battle of Normandy, what college did he attend? 
Knowledge Triplets: Arthur Kreutz, people.person.education, m.010cpmfz
Reginald Sayre, people.person.education, m.0h59thr
Kevin DeNuccio, people.person.education, m.02nstx5
Janet Reitman, people.person.education, m.0w56gq0
Tim Page, people.person.education, m.02wnr99
Marietta College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Richard Stoltzman, people.person.education, m.0h9bb14
Herbert L. Osgood, people.person.education, m.03p72fk
Suzanne Blier, people.person.education, m.0zmvvmr
Tekena Tamuno, people.person.education, m.0646kxq
Michael Hauben, people.person.education, m.0n1l4d9
Nechama Tec, people.person.education, m.05tb0vm
Karin Maria Bruzelius, people.person.education, m.0667qn5
Lycoming College, education.university.fraternities_and_sororities, Kappa Delta Rho
David Siegmund, people.person.education, m.0n0lytq
Dustin Thomason, people.person.education, m.03p73d5
Stephen J. Solarz, people.person.education, m.02wns24
Carthage College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Alexandra Wettlaufer, people.person.education, m.010ldpxq
Heinrich Ries, people.person.education, m.02wn5r9
Geoff McGhee, people.person.education, m.0j819bb
Maggie Gyllenhaal, people.person.education, m.02wn8l_
Anna Kisselgoff, people.person.education, m.0667yd3
Dovid Katz, people.person.education, m.09vjn1n
George Ivany, people.person.education, m.02wmvnp
Gerald Strauss, people.person.education, m.0_xvd8_
Westminster College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Edwin Hermann Zeydel, people.person.education, m.010g2lfk
Theodore Sedgwick, people.person.education, m.02wpq68
Emanuel Ax, people.person.education, m.02wp5w4
Mathias Lécuyer, people.person.education, m.0pl5yxb
Cristina Teuscher, people.person.education, m.05yzhxm
David Nichtern, people.person.education, m.0sw25hm
Gail J. McGovern, people.person.education, m.0n17jff
Franklin & Marshall College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Helen Perlstein Pollard, people.person.education, m.09vjcfk
Norman Doidge, people.person.education, m.0n0smdf
Steve Tesich, people.person.education, m.0n1kr1v
Henry L. Kamphoefner, people.person.education, m.0w59nr6
An historical sketch of Columbia College in the city of New York 1754-1876, book.written_work.author, Columbia University
Gregory Rabassa, people.person.education, m.0k3fg0l
David Eisenbach, people.person.education, m.02wpnkh
André Jacques De Béthune, people.person.education, m.0_z9bqf
Bachelor of Arts, education.education.degree, m.0gmhhcz
Herbert Aptheker, people.person.education, m.05yykqz
70th anniversary of D-Day and the Battle of Normandy, event.public_speaking_event.speech_presentation_discussion, m.010r243f
Herbert Schiller, people.person.education, m.0w5lhff
Gerald Weales, people.person.education, m.0zvxvjl
Richard Mulligan, people.person.education, m.03p720r
Alan Cheetham, people.person.education, m.09vjbp8
Stephen Schanuel, people.person.education, m.02wnwtd
Joanne Ooi, people.person.education, m.0n0zrb8
Charles Wuorinen, people.person.education, m.02wmqvq
Megan McGinnis, people.person.education, m.0n1ml82
Margaret Schlauch, people.person.education, m.010g79yl
Amy Handlin, people.person.education, m.04hq6n4
David Marquardt, people.person.education, m.02_3svx
Johanna Hurwitz, people.person.education, m.05y_sxl
Allan Birnbaum, people.person.education, m.01010qvz
Bethany College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Herbert Agar, people.person.education, m.02wmtrj
Greg Mottola, people.person.education, m.03p732n
John Rousmaniere, people.person.education, m.0bmyhkw
Stephen L. Brusatte, people.person.education, m.0n0thbv
Alec Michod, people.person.education, m.0770knf
Erich Goode, people.person.education, m.02wn0hh
Alan Schechter, people.person.education, m.02wn52h
Herbert Zim, people.person.education, m.02wn90s
Richard Lewontin, people.person.education, m.02wpy4k
Suzanne Malveaux, people.person.education, m.02wppzh
Irving R. Levine, people.person.education, m.0n0s17p
Irene Frisch, people.person.education, m.0sw2552
Bernard J. Lechner, people.person.education, m.0n1lbxm
Milton College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Rebecca Alexander, people.person.education, m.05n1bds
Julia Goldani Telles, people.person.education, m.0_6_91h
Mimi Abramovitz, people.person.education, m.0j_vhk6
Michael Lesy, people.person.education, m.0gx3_9h
Immanuel Wallerstein, people.person.education, m.03q55tz
Richard McKeon, people.person.education, m.0cplf8p
Stephen Zamenhof, people.person.education, m.0101n1lq
Barron H. Lerner, people.person.education, m.0h3_lfy
Jane Schaberg, people.person.education, m.0h9bc66
Jan E. Goldstein, people.person.education, m.03p71vz
Adolph Siegfried Tomars, people.person.education, m.01012pjj
Annette Strauss, people.person.education, m.02wn0hw
Allen Mandelbaum, people.person.education, m.0n431qw
Oswald Jacoby, people.person.education, m.0n1j5gf
Catherine Oxenberg, people.person.education, m.09j524s
Lisa Rhoades, people.person.education, m.02wp2qy
Ann Brashares, people.person.education, m.02wn71m
Lauren Terrazzano, people.person.education, m.03p7388
College of William & Mary, education.university.fraternities_and_sororities, Kappa Delta Rho
Henry Gunderson, people.person.education, m.0btpcn0
Susan Pharr, people.person.education, m.09vj86l
Carolyn Warmus, people.person.education, m.0n0mph3
Stephen Orgel, people.person.education, m.03p72xw
Lectures on literature, book.written_work.author, Columbia University
Charles Seife, people.person.education, m.0cplf28
Albright College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Augustus M. Ryon, people.person.education, m.012p0j63
Suzanne Nam, people.person.education, m.0665v95
Martin Munnelly, people.person.education, m.0svwc70
Celeste Olalquiaga, people.person.education, m.0zfwj23
Henry Onderdonk, people.person.education, m.04lnm1y
St. John's College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Loren Goodman, people.person.education, m.0667zvh
David Buchsbaum, people.person.education, m.0_ky481
Richard LeFrak, people.person.education, m.0hhy3w3
Heidi Julavits, people.person.education, m.0cpldfg
Richard Goldstein, people.person.education, m.09vjgpn
Susan L. Einbinder, people.person.education, m.0zc_v09
Charles Ferster, people.person.education, m.03p739_
Ann Louise Gittleman, people.person.education, m.0n1lj4z
Richard Allen Epstein, people.person.education, m.02wp3tq
David Schmittlein, people.person.education, m.0n1hz9r
Hartwick College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Martin Manulis, people.person.education, m.03p7282
Sylvia Lavin, people.person.education, m.0jzrjk8
Officers and graduates of Columbia college, book.written_work.author, Columbia University
Neal Zaslaw, people.person.education, m.0svt7y6
Barton College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Lynne Lawner, people.person.education, m.0jmvzjv
Neill Borowski, people.person.education, m.0v1lzx8
Philip Gourevitch, people.person.education, m.04hr7zg
Lafayette College, education.university.fraternities_and_sororities, Kappa Delta Rho
Middlebury College, education.university.fraternities_and_sororities, Kappa Delta Rho
Andrew J. Kaslow, people.person.education, m.04d0_xv
David Rosenbaum, people.person.education, m.02wpf13
David Moos, people.person.education, m.0n0_xvh
David Syrett, people.person.education, m.02wn81l
Norman Krasna, people.person.education, m.0w59gqw
Deborah Feyerick, people.person.education, m.0n1lq35
Herbert L. Borison, people.person.education, m.0102zhrg
Middlebury College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Frances Halsband, people.person.education, m.04lncrc
Amanda Filipacchi, people.person.education, m.02wnsrm
70th anniversary of D-Day and the Battle of Normandy, common.topic.notable_types, Public speaking event
Gregory Conniff, people.person.education, m.0zmppr4
Judith Margolis, people.person.education, m.0hvb34v
Immanuel Wallerstein, people.person.education, m.03q55v5
Evert Augustus Duyckinck, people.person.education, m.02wpcn9
Orrin Keepnews, people.person.education, m.02wpvg6
Horace Carpentier, people.person.education, m.03p7211
Theos Casimir Bernard, people.person.education, m.04m57mb
Frank Press, people.person.education, m.04m18rd
Benedict Groeschel, people.person.education, m.0n0w80q
Steven Weinberg, people.person.education, m.02wnssg
Louise Ebner, people.person.education, m.0_kybb9
Nancy Hellebrand, people.person.education, m.0zsmg3_
Thane Rosenbaum, people.person.education, m.04m6010
Ronald Heifetz, people.person.education, m.02wp5rl
Stephen J. Dubner, people.person.education, m.03p726c
William Bleckwenn, people.person.education, m.07ss3q8
Katherine Reback, people.person.education, m.0h7s6b4
Susan Zuccotti, people.person.education, m.09vjdy1
Trinity College, education.university.fraternities_and_sororities, St. Anthony Hall
Herbert H. Rowen, people.person.education, m.0646m0p
Michael Azerrad, people.person.education, m.02wn9xh
Martin D. Weiss, people.person.education, m.06wjf21
Stephen Wiesner, people.person.education, m.0svz01q
Megan McCafferty, people.person.education, m.02wncd9
Laura Kasischke, people.person.education, m.0v315nc
Teju Cole, people.person.education, m.0w56_ql
Julie Menin, people.person.education, m.0n0hq5y
David Wechsler, people.person.education, m.02wpg20
John Corigliano, people.person.education, m.02wpgxg
Rebecca Oppenheimer, people.person.education, m.0n0mn4m
Nigel Jaquiss, people.person.education, m.0n11h9v
Matthew Continetti, people.person.education, m.03p72y0
David Cort, people.person.education, m.0_pk23y
Susannah Hagan, people.person.education, m.0gltt1q
John Henry Haaren, people.person.education, m.0svv864
Laura Silber, people.person.education, m.0770kc3
Joanna Rees, people.person.education, m.0n1ll1d
Robert L. Kovach, people.person.education, m.0fq7w09
Konrad Emil Bloch, people.person.education, m.02wmz4m
Eric Chasalow, people.person.education, m.0646kp1
m.02nqgmw, education.education.institution, Columbia University
Barbara Alpern Engel, people.person.education, m.0dl6fn1
Steven Krasner, people.person.education, m.0svvpw1
Nathaniel Kleitman, people.person.education, m.0w5560c
Devin Fore, people.person.education, m.010lb0p3
Lisa Nemec, people.person.education, m.0w592bf
Ernst Florian Winter, people.person.education, m.09j5d9z
Charles Miller Metzner, people.person.education, m.0hhy035
Henry Y. Satterlee, people.person.education, m.03p73db
Lois Holzman, people.person.education, m.02wn7ry
Lynne Hanley, people.person.education, m.02wnyyn
Edward Lewine, people.person.education, m.02wn3vc
Henry Cutler Torrey, people.person.education, m.0_xwmz6
Tarkio College, education.university.fraternities_and_sororities, Alpha Sigma Phi
David Dworkin, people.person.education, m.0n0lvc4
Allan Temko, people.person.education, m.0b6wp1b
Peter H. Kostmayer, people.person.education, m.02wnw10
Columbia University, book.author.works_written, An historical sketch of Columbia College in the city of New York 1754-1876
David Altmejd, people.person.education, m.03p71vb
Lawrence Ferlinghetti, people.person.education, m.02wp4g1
Julie Otsuka, people.person.education, m.0p7dtkk
Muriel Rukeyser, people.person.education, m.02wnhx_
Elaine Sterne Carrington, people.person.education, m.0svyrmw
Rebecca Masisak, people.person.education, m.0svs5ps
Sword Beach, location.location.events, 70th anniversary of D-Day and the Battle of Normandy
70th anniversary of D-Day and the Battle of Normandy, time.event.locations, Sword Beach
David Kaczynski, people.person.education, m.02wp0v8
Steven Libutti, people.person.education, m.03p72mb
Katie Koczynski, people.person.education, m.0fpl3wn
Kathryn Cramer, people.person.education, m.02wp5h_
Joachim Neugroschel, people.person.education, m.0gx410g
Oswald Mbuyiseni Mtshali, people.person.education, m.0n1mdfn
David P. McAllester, people.person.education, m.09vjdy8
Rosalie Colie, people.person.education, m.0101lf8x
Katherine Freese, people.person.education, m.0n0rhx9
Wagner College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Herbert Marcuse, people.person.education, m.09j51lr
Judith Rodin, people.person.education, m.02wn85m
Irene Marcuse, people.person.education, m.0h9b1mn
Richard Kuh, people.person.education, m.0667m_d
Olivier Mosset, people.person.education, m.0n1dcfp
Barack Obama, people.person.education, m.02nqgmw
Stephanie Strom, people.person.education, m.03p71z7
Laura Zirbes, people.person.education, m.0sw23w6
Ron Suskind, people.person.education, m.02wps93
Centre College, education.university.fraternities_and_sororities, Alpha Sigma Phi
m.0gmhhcz, education.education.institution, Columbia University
Richard Kostelanetz, people.person.education, m.02wn0yk
Rebecca Lancefield, people.person.education, m.0n0t692
Charles Edward Merriam, people.person.education, m.0btpcp5
Erik Feig, people.person.education, m.0w59pj1
Rudolf Flesch, people.person.education, m.09j56vp
Presbyterian College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Suzanne Keller, people.person.education, m.0_m39d7
Ernst Jaakson, people.person.education, m.0sv_73z
Vincent M. Battle, people.person.education, m.03p71vn
Hermann Hagedorn, people.person.education, m.02wnzk_
Ernst Philip Boas, people.person.education, m.0czvsvx
Augustus W. Bennet, people.person.education, m.02wnj8_
Peter Glaser, people.person.education, m.04q199t
Ernst Freund, people.person.education, m.0w5mvm4
Suzanne Gardinier, people.person.education, m.09vjbl7
Klaus Fuchs, people.person.education, m.02wpg9_
Charles R. Forbes, people.person.education, m.0fpl2vw
Erich S. Gruen, people.person.education, m.02wmznn
Herbert S. Goldstein, people.person.education, m.0cpl9zt
Herbert Zelenko, people.person.education, m.02wmykp
Diane Kunz, people.person.education, m.02wpm54
Simeon Strunsky, people.person.education, m.02wnpmv
Roderick Seidenberg, people.person.education, m.0107dc_2
Irving Langmuir, people.person.education, m.02wpy56
Jessica Tsoong, people.person.education, m.0z567rm
Susan Kuczmarski, people.person.education, m.0_kxzx2
John Kluge, people.person.education, m.02wnm9h
Anita Brenner, people.person.education, m.0p7f6nm
Chris Iijima, people.person.education, m.0cplc92
Anthony Alofsin, people.person.education, m.03p722y
McDaniel College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Claudia Koonz, people.person.education, m.0n1hxj1
Charles Waldstein, people.person.education, m.02wn15x
Hugo Fregonese, people.person.education, m.0svzrlh
Emanuel Levenson, people.person.education, m.09vjjkz
Wiard Ihnen, people.person.education, m.0h3_lhx
Elaine Gavalas, people.person.education, m.0w5dbrm
Joel Krosnick, people.person.education, m.03p724h
Elon Howard Eaton, people.person.education, m.0czvwch
Erik Kuselias, people.person.education, m.04ysz0r
William G. Distin, people.person.education, m.0svvq56
Rachel Kushner, people.person.education, m.064zxb3
Peggy McCay, people.person.education, m.0n42scw
Andrew Truxal, people.person.education, m.0gl18lr
Herbert Gutman, people.person.education, m.02wpk26
Katherine Manthorne, people.person.education, m.0_kymng
Norman Dorsen, people.person.education, m.04yymxv
Andrew Lih, people.person.education, m.0svw0mj
Rachel Nichols, people.person.education, m.05yyy24
Leslie B. Vosshall, people.person.education, m.0j6dxq3
Jeffrey L. Kessler, people.person.education, m.0pb91rf
Liz Murray, people.person.education, m.04q18xq
Richard Rive, people.person.education, m.0134pgpp
Columbia University, book.author.works_written, The Lohf years
Aaron Rehkop, people.person.education, m.0123tx0d
70th anniversary of D-Day and the Battle of Normandy, event.speech_or_presentation.event, m.010r243f
Lois Blount, people.person.education, m.0j_vk53
Coe College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Wofford College, education.university.fraternities_and_sororities, Alpha Sigma Phi
David Yeroushalmi, people.person.education, m.09vjk8c
m.010r243f, event.speech_or_presentation.speaker_s, Barack Obama
Louise Rosenblatt, people.person.education, m.03p737n
Abraham Nemeth, people.person.education, m.04lp47w
m.010r243f, event.speech_or_presentation.event, 70th anniversary of D-Day and the Battle of Normandy
George Gustav Heye, people.person.education, m.02wnz3c
Alexandra Ansanelli, people.person.education, m.0n1lnl_
Gregory H. Razran, people.person.education, m.010b3x0_
Richard Cruess, people.person.education, m.02wpwvn
Anthony Bleecker, people.person.education, m.02wpr0m
Beth Raymer, people.person.education, m.0h3_p28
Wendy MacNaughton, people.person.education, m.0n46939
Richard T. Ely, people.person.education, m.02wpmmh
Elie Siegmeister, people.person.education, m.03p735s
Carolyn Gusoff, people.person.education, m.02wpcfv
R. John Rath, people.person.education, m.01048n_2
Franklin College, education.university.fraternities_and_sororities, Kappa Delta Rho
George Economou, people.person.education, m.09vjd04
Kimberly Peirce, people.person.education, m.0n1l7b2
Catherine Ann Cline, people.person.education, m.0667ppm
Herbert Halpert, people.person.education, m.0n0vxq0
Mildred Cohn, people.person.education, m.05t85wk
Janet Bodnar, people.person.education, m.0770v0s
Laura Schlessinger, people.person.education, m.02wns0y
Mark Seidenberg, people.person.education, m.0770pqr
Katherine Kazarian, people.person.education, m.012n3trm
Mark Eyskens, people.person.education, m.0h59tfj
Richard Lewine, people.person.education, m.0n1hvkd
Irving Selikoff, people.person.education, m.0n1lst5
Steven Zaloga, people.person.education, m.03p737h
Rachel Wetzsteon, people.person.education, m.09vjbjf
Ernest Lee Tuveson, people.person.education, m.0107x31x
Angela Diller, people.person.education, m.0106c__4
Richard Hofstadter, people.person.education, m.02wnyh3
Philip Yampolsky, people.person.education, m.0w5j33_
Teh-Lung Ku, people.person.education, m.0zt14gv
David Hazony, people.person.education, m.0sw3pfd
Umu Hawa Tejan-Jalloh, people.person.education, m.0gw3875
Norman Podhoretz, people.person.education, m.02wpfqh
Kimberly Navarro, people.person.education, m.0n1dk0l
Anna Rabinowitz, people.person.education, m.0h6g91x
Andrés Oppenheimer, people.person.education, m.0sw35r2
Niels Henry Sonne, people.person.education, m.0_ld3bn
Rachel DeWoskin, people.person.education, m.0hvbm93
Linda Svendsen, people.person.education, m.0zcqnpb
David Scheiner, people.person.education, m.07llr85
David Tell, people.person.education, m.02wpn7c
Claudia Rankine, people.person.education, m.0n1jnlw
Herbert Lieberman, people.person.education, m.0667zn8
Nicole Holofcener, people.person.education, m.0n0qmsk
Diane Paulus, people.person.education, m.0cv3c1z
Anna Ivey, people.person.education, m.02wpvbk
Karin Chien, people.person.education, m.0w5jkdx
Norman Armitage, people.person.education, m.02wnxgw
Betsy McCaughey, people.person.education, m.02wnr55
70th anniversary of D-Day and the Battle of Normandy, common.topic.notable_for, g.11bbqdm6bm
Jonathan Rosenblatt, people.person.education, m.0770vt9
Henry Kravis, people.person.education, m.0cpl9vh
Alexandra Wallace, people.person.education, m.05yzwlz
Mae Yih, people.person.education, m.045zylv
Aaron D. Wyner, people.person.education, m.03p72h3
Philippe Reines, people.person.education, m.09sd24y
Henry Bruère, people.person.education, m.0dlqjgm
Melissa Marr, people.person.education, m.03p7346
Lycoming College, education.university.fraternities_and_sororities, Alpha Sigma Phi
Henry Swieca, people.person.education, m.0hvv7m5
Katherine Binney Shippen, people.person.education, m.0h3_nt_
Neal Malicky, people.person.education, m.08d7c95
David Eppstein, people.person.education, m.02kq26y
wait what, people.person.education, m.0_kyx36
Eric Salzman, people.person.education, m.04lnwqh
Jess Benhabib, people.person.education, m.012nz6vh
Jim Dwyer, people.person.education, m.02wp738
Immanuel Wallerstein, people.person.education, m.03q55tr
Barbara Sicherman, people.person.education, m.0zfwfvn
Brenda Shaughnessy, people.person.education, m.07y59xc
John Quiñones, people.person.education, m.0cv3bxj
Gregory D'Alessio, people.person.education, m.0zdgh70

Answer: Columbia University