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 did the public speaker advocating for Educational reform major in? 
Knowledge Triplets: m.01064n95, education.education.major_field_of_study, Political Science
m.010bfw03, education.education.major_field_of_study, Political Science
m.05yz307, education.education.major_field_of_study, Social science
m.04m32py, education.education.major_field_of_study, Education
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education reform
m.02zxky5, education.education.major_field_of_study, Political Science
m.0_rz7d7, education.education.major_field_of_study, Social science
m.0fq7p0_, education.education.major_field_of_study, Political Science
m.0zvx9lg, education.education.major_field_of_study, Political Science
m.0k2y7th, education.education.major_field_of_study, Political Science
m.0zd9zb_, education.education.major_field_of_study, Political Science
m.0y82bq3, education.education.major_field_of_study, Political Science
m.04hdhms, education.education.major_field_of_study, Political Science
m.0k1hckn, education.education.major_field_of_study, Public administration
m.04hd2n1, education.education.major_field_of_study, Political Science
m.07wvzk5, education.education.major_field_of_study, Political Science
m.03qc2l9, education.education.major_field_of_study, Political Science
m.05fzvvw, education.education.major_field_of_study, Public policy
m.0ztq1cj, education.education.major_field_of_study, Social science
m.0dg7fw7, education.education.major_field_of_study, Political Science
Education reform, common.topic.notable_types, Literature Subject
m.07ysg04, education.education.major_field_of_study, Political Science
m.0zbgk97, education.education.major_field_of_study, Political Science
Tom Brown's School Days, film.film.subjects, Education reform
m.04jqrgf, education.education.major_field_of_study, Political Science
m.02wpbs8, education.education.major_field_of_study, Political Science
m.0w2yhgl, education.education.major_field_of_study, Tax law
American Federation of Teachers, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
m.02wmzcg, education.education.major_field_of_study, Political Economy
m.0v264bj, education.education.major_field_of_study, Political Science
m.0fq7vs8, education.education.major_field_of_study, Political Science
m.02vb279, education.education.major_field_of_study, Political Science
m.0fq7nt7, education.education.major_field_of_study, Political Science
m.04dxhz9, education.education.major_field_of_study, Social science
m.0d496ng, education.education.major_field_of_study, Economics
m.04dxz49, education.education.major_field_of_study, Political Science
m.0zp18b9, education.education.major_field_of_study, Social science
m.0fq99t7, education.education.major_field_of_study, Political Science
m.02_81k3, education.education.major_field_of_study, Political Science
Barack Obama, event.public_speaker.speeches_or_presentations, m.0j31vdq
Education reform, book.written_work.subjects, Left Back: A Century of Failed School Reforms
m.0hhy3t8, education.education.major_field_of_study, Political Science
Education reform, base.schemastaging.context_name.pronunciation, g.125_rjf_8
m.0_s6_3y, education.education.major_field_of_study, Political Science
m.02wnsy_, education.education.major_field_of_study, Political Science
m.04hnrzf, education.education.major_field_of_study, Political Science
m.0y5vp52, education.education.major_field_of_study, Political Science
m.0zqsftq, education.education.major_field_of_study, Economics
m.02wn695, education.education.major_field_of_study, Political Science
m.0j8mkd6, education.education.major_field_of_study, Social science
m.0fq9d8g, education.education.major_field_of_study, Political Science
m.010bcjt4, education.education.major_field_of_study, Social science
m.010bg6gq, education.education.major_field_of_study, Civil law
m.011465f8, education.education.major_field_of_study, Social science
m.03p7wv6, education.education.major_field_of_study, Political Science
m.04m32py, education.education.major_field_of_study, Political Science
m.0fq7y0s, education.education.major_field_of_study, Political Science
m.0zwj8v8, education.education.major_field_of_study, Social science
m.0k20m19, education.education.major_field_of_study, Social science
m.04q16rh, education.education.major_field_of_study, Social science
Left Back: A Century of Failed School Reforms, common.topic.notable_for, g.125601r5s
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, Education reform
m.04yxw25, education.education.major_field_of_study, Political Science
Left Back: A Century of Failed School Reforms, book.written_work.subjects, History
m.012h8dt2, education.education.major_field_of_study, Political Science
m.0h5vxvw, education.education.major_field_of_study, Political Science
m.010g7ql5, education.education.major_field_of_study, Science
m.03p7jg4, education.education.major_field_of_study, International relations
m.03p7660, education.education.major_field_of_study, Political Science
m.0n0x__1, education.education.major_field_of_study, Political Science
m.0fq7ycf, education.education.major_field_of_study, Political Science
m.07m2_19, education.education.major_field_of_study, International relations
m.0j5d4s8, education.education.major_field_of_study, Political Science
m.040j2c5, education.education.major_field_of_study, Political Science
m.0fq9f7v, education.education.major_field_of_study, Political Science
m.04hymq5, education.education.major_field_of_study, History
Education reform, common.topic.notable_for, g.1257qk2wd
m.046c18z, education.education.major_field_of_study, Political Science
m.02_9wmx, education.education.major_field_of_study, Political Science
m.02wp4gj, education.education.major_field_of_study, Economics
m.0w2yhdj, education.education.major_field_of_study, Political Science
m.0fq7r97, education.education.major_field_of_study, Political Science
m.04hptk9, education.education.major_field_of_study, Political Science
m.04fsct1, education.education.major_field_of_study, Social science
m.0n0l136, education.education.major_field_of_study, Political Science
m.0zm2x_v, education.education.major_field_of_study, Social science
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education
m.0fq7sqg, education.education.major_field_of_study, Political Science
m.0h7sd26, education.education.major_field_of_study, Political Science
Left Back: A Century of Failed School Reforms, common.topic.notable_types, Book
m.04hnqm2, education.education.major_field_of_study, Political Science
m.0_y8yf_, education.education.major_field_of_study, Political Science
m.02kqd32, education.education.major_field_of_study, Political Science
m.078nxvy, education.education.major_field_of_study, Political Science
m.02wn388, education.education.major_field_of_study, Political Science
m.02vhrx7, education.education.major_field_of_study, Political Science
m.0kg8vgj, education.education.major_field_of_study, Political Science
m.011t8_lm, education.education.major_field_of_study, Law
m.0fq9d9b, education.education.major_field_of_study, Political Science
m.010d_6p7, education.education.major_field_of_study, Social science
m.0w2s1g8, education.education.major_field_of_study, Political Science
m.0k3qf5z, education.education.major_field_of_study, Political Science
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.author, Myron Lieberman
m.0zl__77, education.education.major_field_of_study, Political Science
m.0w2yhdj, education.education.major_field_of_study, Economics
m.05km314, education.education.major_field_of_study, Political Science
m.0zw8v12, education.education.major_field_of_study, Social science
m.0103r5rr, education.education.major_field_of_study, Literature
m.0fq7qwh, education.education.major_field_of_study, Political Science
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.article, m.0766g9c
m.04ds1nx, education.education.major_field_of_study, Political Science
m.09rmtwd, education.education.major_field_of_study, Science
m.05yydnn, education.education.major_field_of_study, Political Science
m.04hzqrb, education.education.major_field_of_study, Political Science
m.03p8hv5, education.education.major_field_of_study, Political Science
m.0zw9yjj, education.education.major_field_of_study, Social science
Education reform, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
m.0fq7y8r, education.education.major_field_of_study, Political Science
m.0w0k8z2, education.education.major_field_of_study, Social science
m.0n1kx9b, education.education.major_field_of_study, Philosophy
m.011k67_r, education.education.major_field_of_study, Political Science
m.03lld_v, education.education.major_field_of_study, Political Science
m.02wndqt, education.education.major_field_of_study, Economics
Left Back: A Century of Failed School Reforms, book.written_work.subjects, United States of America
m.04jt69b, education.education.major_field_of_study, Political Science
m.04ysszy, education.education.major_field_of_study, Political Science
m.0k3hwz6, education.education.major_field_of_study, Political Science
m.0k2wkr7, education.education.major_field_of_study, Political Science
m.02zd45w, education.education.major_field_of_study, Political Science
m.07zmrv6, education.education.major_field_of_study, Political Science
m.0_f_xh_, education.education.major_field_of_study, Comparative politics
m.0fq7r7f, education.education.major_field_of_study, Political Science
m.0b6vbk8, education.education.major_field_of_study, Political Science
m.0_s6_3y, education.education.major_field_of_study, Economics
m.04hdfjn, education.education.major_field_of_study, Political Science
m.04zrlmx, education.education.major_field_of_study, Political Science
m.0gtzvm8, education.education.major_field_of_study, Political Science
m.0zp0q8h, education.education.major_field_of_study, Social science
m.01076xn8, education.education.major_field_of_study, Social science
m.02wjzc4, education.education.major_field_of_study, Political Science
m.0n0kyr1, education.education.major_field_of_study, Political Science
m.02_7q51, education.education.major_field_of_study, Political Science
m.0zd0_81, education.education.major_field_of_study, Political Science
m.0d59b7_, education.education.major_field_of_study, Political Science
m.0_s7l4j, education.education.major_field_of_study, Political Science
m.02wp768, education.education.major_field_of_study, Political Science
m.0zn7h14, education.education.major_field_of_study, Social science
m.0k2bvj2, education.education.major_field_of_study, Political Science
m.0dw0h_c, education.education.major_field_of_study, Political Science
m.0fq7rb4, education.education.major_field_of_study, Political Science
m.02wnhmq, education.education.major_field_of_study, Political Science
m.063lwq_, education.education.major_field_of_study, Political Science
m.04clpwh, education.education.major_field_of_study, Science
m.0zshk28, education.education.major_field_of_study, Law
m.0dg7g06, education.education.major_field_of_study, Political Science
m.04t5n2y, education.education.major_field_of_study, Political Science
m.02_b3r7, education.education.major_field_of_study, Political Science
m.0w5lf84, education.education.major_field_of_study, Political Science
m.0fq7y9b, education.education.major_field_of_study, Political Science
Left Back: A Century of Failed School Reforms, common.topic.article, m.071t783
m.0zgqtz3, education.education.major_field_of_study, Political Science
m.0w2yhdj, education.education.major_field_of_study, Tax law
m.0fq997_, education.education.major_field_of_study, Political Science
m.0n42xw8, education.education.major_field_of_study, Political Science
m.064cyq_, education.education.major_field_of_study, Political Science
m.04hnlmw, education.education.major_field_of_study, Political Science
m.0zbg8p6, education.education.major_field_of_study, Political Science
Left Back: A Century of Failed School Reforms, book.written_work.author, Diane Ravitch
The Teacher Unions: How They Sabotage Educational Reform and Why, book.book.genre, Non-fiction
m.0zfxy77, education.education.major_field_of_study, Political Science
Diane Ravitch, book.author.works_written, Left Back: A Century of Failed School Reforms
m.0dh5v81, education.education.major_field_of_study, Social science
m.04hd1qy, education.education.major_field_of_study, Political Science
m.04hbv7y, education.education.major_field_of_study, Political Science
m.0zfg8c6, education.education.major_field_of_study, Social science
m.0ggdhk2, education.education.major_field_of_study, Political Science
m.010bd0r8, education.education.major_field_of_study, Science
m.010lk1j7, education.education.major_field_of_study, Political Science
m.0cpl7n7, education.education.major_field_of_study, Political Science
m.0fq7qc_, education.education.major_field_of_study, Political Science
m.0_r7d9z, education.education.major_field_of_study, Political Science
m.05yyl26, education.education.major_field_of_study, Political Science
m.0116rwxg, education.education.major_field_of_study, Political Science
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education in the United States
m.02wnm30, education.education.major_field_of_study, Political Science
m.04dx825, education.education.major_field_of_study, Political Science
m.0n0x__1, education.education.major_field_of_study, Economics
m.01010pj7, education.education.major_field_of_study, Political Science
m.03p7vy4, education.education.major_field_of_study, Political Science
Education, education.education.major_field_of_study, m.04m32py
m.0gmhrp8, education.education.major_field_of_study, Political Science
m.049yfx3, education.education.major_field_of_study, Political Science
m.0znk__1, education.education.major_field_of_study, Social science
m.0k26l32, education.education.major_field_of_study, Political Science
m.0fq7y1m, education.education.major_field_of_study, Political Science
m.0k2y8rj, education.education.major_field_of_study, Political Science
m.02wp0h3, education.education.major_field_of_study, Social science
m.03p7m26, education.education.major_field_of_study, Political Science
m.02ky4cb, education.education.major_field_of_study, Political Science
m.0j204q7, education.education.major_field_of_study, Social science
m.0zwbm8j, education.education.major_field_of_study, Social science
m.05cljry, education.education.major_field_of_study, Political Science
m.0v_87xr, education.education.major_field_of_study, Law
m.0fpy332, education.education.major_field_of_study, Philosophy
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, National Education Association
m.0j8x3b5, education.education.major_field_of_study, Political Science
Education reform, film.film_subject.films, Tom Brown's School Days
m.0fq7r6m, education.education.major_field_of_study, Political Science
m.0fq99w8, education.education.major_field_of_study, Political Science
m.0zbt881, education.education.major_field_of_study, Social science
m.04m32py, education.education.major_field_of_study, Political Science
m.047hl_5, education.education.major_field_of_study, International relations
m.0zd9w84, education.education.major_field_of_study, Science
m.04hw711, education.education.major_field_of_study, History
m.0zwdd9h, education.education.major_field_of_study, Social science
The Teacher Unions: How They Sabotage Educational Reform and Why, book.book.editions, The Teacher Unions: How the NEA and AFT Sabotage Reform and Hold Students, Parents, Teachers, and Taxpayers Hostage to Bureaucracy
m.0zrvnk5, education.education.major_field_of_study, Social science
m.0zqs6rq, education.education.major_field_of_study, International law
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education
m.0k1yzvz, education.education.major_field_of_study, Political Science
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.notable_for, g.125g1yt_w
m.075dw81, education.education.major_field_of_study, Political Science
m.0_79sp9, education.education.major_field_of_study, Comparative politics
m.0n0tw8b, education.education.major_field_of_study, Political Science
m.0fq984w, education.education.major_field_of_study, Political Science
m.0fq9995, education.education.major_field_of_study, Political Science
m.05t2yj2, education.education.major_field_of_study, Political Science
m.02wp639, education.education.major_field_of_study, Political Science
m.07712yz, education.education.major_field_of_study, Political Science
m.0fq7rjf, education.education.major_field_of_study, Political Science
m.052lt_1, education.education.major_field_of_study, Political Science
m.07ky025, education.education.major_field_of_study, Political Science
m.0w3qcw8, education.education.major_field_of_study, Political Science
m.07lf9fd, education.education.major_field_of_study, Public administration
m.02_7b0z, education.education.major_field_of_study, Political Science
m.0zqs6rq, education.education.major_field_of_study, Political Science
m.011lqt_c, education.education.major_field_of_study, Social science
m.04hqy_g, education.education.major_field_of_study, Political Science
m.0v3ph89, education.education.major_field_of_study, Political Science
m.04j6jv0, education.education.major_field_of_study, Political Science
m.0wbjq4k, education.education.major_field_of_study, Political Science
m.02zxvn0, education.education.major_field_of_study, Political Science
m.02wn0hh, education.education.major_field_of_study, Social science
m.0fq996w, education.education.major_field_of_study, Political Science
m.0fq7vvq, education.education.major_field_of_study, Political Science
m.0w2y_q6, education.education.major_field_of_study, Political Science
m.066438b, education.education.major_field_of_study, Political Science
m.03ywhm2, education.education.major_field_of_study, Political Science
m.047kqb8, education.education.major_field_of_study, Political Science
m.0zshk28, education.education.major_field_of_study, Political Science
m.07m9j6_, education.education.major_field_of_study, Political Science
m.03qc2m0, education.education.major_field_of_study, Political Science
m.047j7w9, education.education.major_field_of_study, Political Science
Education reform, book.book_subject.works, Left Back: A Century of Failed School Reforms
m.049yc8h, education.education.major_field_of_study, Political Science
m.0fq9c9y, education.education.major_field_of_study, Political Science
m.0brl9y2, education.education.major_field_of_study, Science
m.0h9cg8d, education.education.major_field_of_study, Political Science
m.0k16n96, education.education.major_field_of_study, Science
m.0k1q5w2, education.education.major_field_of_study, Political Science
m.010bsh79, education.education.major_field_of_study, Science
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, American Federation of Teachers
m.0fq7ws8, education.education.major_field_of_study, International relations
m.010f3pxg, education.education.major_field_of_study, Public law
m.09j5lq6, education.education.major_field_of_study, Social science
m.0v263y4, education.education.major_field_of_study, Political Science
m.02wn_k9, education.education.major_field_of_study, Government
m.0100_n82, education.education.major_field_of_study, Law
m.04yssrz, education.education.major_field_of_study, Political Science
m.0k1gwb6, education.education.major_field_of_study, Political Science
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.notable_types, Book
m.02wn9yx, education.education.major_field_of_study, Political Science
m.0zln46z, education.education.major_field_of_study, Political Science
m.0668q66, education.education.major_field_of_study, Political Science
m.0zsqn9q, education.education.major_field_of_study, Political Science
m.010lj0h3, education.education.major_field_of_study, Political Science
m.04yssrm, education.education.major_field_of_study, Political Science
m.010bd677, education.education.major_field_of_study, Law
m.04hd39x, education.education.major_field_of_study, Communication
m.0gj8r56, education.education.major_field_of_study, Political Science
m.0b7m7tk, education.education.major_field_of_study, Political Science
m.05kf624, education.education.major_field_of_study, Political Science
Education reform, common.topic.article, m.02mdn
m.046c15k, education.education.major_field_of_study, Communication
m.0w5mjyr, education.education.major_field_of_study, Acting
m.04hcx70, education.education.major_field_of_study, Political Science
m.07ysg0y, education.education.major_field_of_study, Political Science
m.04m41c5, education.education.major_field_of_study, Political Science
m.0n1g_r_, education.education.major_field_of_study, Political Science
m.0h5w2yj, education.education.major_field_of_study, Economics
m.0fq7rwj, education.education.major_field_of_study, Political Science
m.0bmydj7, education.education.major_field_of_study, Political Science
m.04m4rw6, education.education.major_field_of_study, Political Science
m.03ln49w, education.education.major_field_of_study, Social science
m.0n1b8_v, education.education.major_field_of_study, Science
m.05912xd, education.education.major_field_of_study, Public administration
m.0k1kb29, education.education.major_field_of_study, Political Science
m.0fq9gy9, education.education.major_field_of_study, Political Science
m.07ky025, education.education.major_field_of_study, Policy studies
m.04hfggy, education.education.major_field_of_study, Political Science
m.0w28zbz, education.education.major_field_of_study, Law
m.03p7l1d, education.education.major_field_of_study, Social science
m.0zqs6rq, education.education.major_field_of_study, Economics
m.0ztqckp, education.education.major_field_of_study, Political Science
Left Back: A Century of Failed School Reforms, book.written_work.subjects, American History
m.0667m04, education.education.major_field_of_study, Political Science
m.0n0n_p3, education.education.major_field_of_study, Political Economy
m.0j31vdq, event.speech_or_presentation.speech_topic, Education reform
Education reform, event.speech_topic.speeches_or_presentations_on_this_topic, m.0j31vdq
m.0dg7dr_, education.education.major_field_of_study, Political Science
m.06zy3ld, education.education.major_field_of_study, Social science
m.03p7mk6, education.education.major_field_of_study, Political Science
m.0fq7rm5, education.education.major_field_of_study, Political Science
m.04hw711, education.education.major_field_of_study, Political Science
National Education Association, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
m.0dwl6q7, education.education.major_field_of_study, Political Science
m.07712yz, education.education.major_field_of_study, Public policy
Diane Ravitch, book.author.book_editions_published, Left Back: A Century of Failed School Reforms
m.02wnm30, education.education.major_field_of_study, Economics
Left Back: A Century of Failed School Reforms, book.written_work.subjects, 20th century
m.0zqs6rq, education.education.major_field_of_study, Environmental law
m.0109sx8_, education.education.major_field_of_study, Social science
m.0k37164, education.education.major_field_of_study, Political Science
m.02_b999, education.education.major_field_of_study, Political Science
m.0zdbg73, education.education.major_field_of_study, Political Science
m.0101ndds, education.education.major_field_of_study, Political Science
m.0fq7wt9, education.education.major_field_of_study, Political Science
m.02wnsy_, education.education.major_field_of_study, Government
m.0n40q2_, education.education.major_field_of_study, Political Science
m.02wmvm8, education.education.major_field_of_study, Political Science
m.0gz2mqh, education.education.major_field_of_study, Political Science
m.0772qsr, education.education.major_field_of_study, Political Science
m.04hrrdm, education.education.major_field_of_study, Social science
m.0fq7rxk, education.education.major_field_of_study, Political Science
m.02wph82, education.education.major_field_of_study, Social science
m.0wzbdgw, education.education.major_field_of_study, Political Science
m.0k2xy_9, education.education.major_field_of_study, Political Science
m.05yyq90, education.education.major_field_of_study, Political Science
m.02wpqs5, education.education.major_field_of_study, Political Science
m.04hymq5, education.education.major_field_of_study, Political Science
m.04bfff9, education.education.major_field_of_study, Political Science
m.0645mtv, education.education.major_field_of_study, Political Science
m.02wmx6c, education.education.major_field_of_study, Government
m.0vxm0p9, education.education.major_field_of_study, Political Science
m.0w16xy3, education.education.major_field_of_study, Law
m.0k2d9k8, education.education.major_field_of_study, Political Science
m.0k16gm4, education.education.major_field_of_study, Political Science
m.0k37164, education.education.major_field_of_study, Law
m.0n1gnt8, education.education.major_field_of_study, Political Science
m.0w5mtn4, education.education.major_field_of_study, Social science
m.04hd39x, education.education.major_field_of_study, Political Science
m.047jyct, education.education.major_field_of_study, Political Science
m.010bd677, education.education.major_field_of_study, Political Science
m.0n113h8, education.education.major_field_of_study, Political Science

Answer: Political Science