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: From which school did the artist who recorded Freedom Dub get a doctorate degree? 
Knowledge Triplets: m.0gyhr2c, education.education.institution, Boston University
m.06wglhj, education.education.institution, Boston University
m.0w5lwlg, education.education.institution, Boston University
m.0bmyntj, education.education.institution, Boston University
m.0zcqztk, education.education.institution, Boston University
m.0gvw8fd, education.education.institution, Boston University
m.0w54m0d, education.education.institution, Boston University
m.04mjd0h, education.education.institution, Boston University
m.02wnvwl, education.education.institution, Boston University
m.0ggflsr, education.education.institution, Boston University
m.0w578zm, education.education.institution, Boston University
m.0w5djnl, education.education.institution, Boston University
m.0w5lny0, education.education.institution, Boston University
m.0czvvyw, education.education.institution, Boston University
m.02wpktc, education.education.institution, Boston University
Freedom Dub, music.recording.releases, Black Sheep
m.010lc2fp, education.honorary_degree.institution, Gallaudet University
m.0w5hdz8, education.education.institution, Boston University
m.04m5ywc, education.education.institution, Boston University
m.0gggjw6, education.education.institution, Boston University
B.U. Exposure, education.school_newspaper.school, Boston University
m.0g5dn8d, education.education.institution, Boston University
m.0zfmwyh, education.education.institution, Boston University
m.04hns59, education.education.institution, Boston University
m.04hmwf0, education.education.institution, Boston University
m.0n1ljc3, education.education.institution, Boston University
m.0w5bgym, education.education.institution, Boston University
m.0j4lw8h, education.education.institution, Boston University
m.0svxmxn, education.education.institution, Boston University
m.0n0t9nm, education.education.institution, Boston University
m.04hymgg, education.education.institution, Boston University
m.0hzv6_9, education.education.institution, Boston University
m.0g5br8b, education.education.institution, Boston University
m.02wnxyh, education.education.institution, Boston University
m.0bmyycg, education.education.institution, Boston University
m.0w5bp8l, education.education.institution, Boston University
m.0cpktdk, education.education.institution, Boston University
m.0wlw68b, education.education.institution, Boston University
g.11bv3f56nb, education.education.institution, Boston University
m.05yzqc1, education.education.institution, Boston University
m.0svzv_8, education.education.institution, Boston University
m.0gltrsl, education.education.institution, Boston University
m.0h6hdl3, education.education.institution, Boston University
m.0mzvvcd, education.education.institution, Boston University
m.02wnst6, education.education.institution, Boston University
m.0n0dds3, education.education.institution, Boston University
m.0y89t3g, education.education.institution, Boston University
m.05yzgd4, education.education.institution, Boston University
m.0svx9qg, education.education.institution, Boston University
m.05cmvvv, education.education.institution, Boston University
m.02wn7ky, education.education.institution, Boston University
Freedom Dub, music.recording.artist, Zema
m.04hx8vw, education.education.institution, Boston University
m.0hgtdnj, education.education.institution, Boston University
m.05yzm9c, education.education.institution, Boston University
m.02wnwrx, education.education.institution, Boston University
m.0bmynpp, education.education.institution, Boston University
m.0w5hfrj, education.education.institution, Boston University
Freedom Dub, music.featured_artist.recordings, Martin Luther King, Jr.
m.04lnz_g, education.education.institution, Boston University
m.05yzlf1, education.education.institution, Boston University
m.0zx03tb, education.education.institution, Boston University
m.02wnkyx, education.education.institution, Boston University
m.0bd2zhs, education.education.institution, Boston University
m.02wp75f, education.education.institution, Boston University
m.0n9_3y_, education.education.institution, Boston University
m.0n1nbzv, education.education.institution, Boston University
m.02kyq2c, education.education.institution, Boston University
m.02kym25, education.education.institution, Boston University
Zema, music.artist.track, Black Sheep Dub
m.0bymcxk, education.education.institution, Boston University
m.0w5jh5d, education.education.institution, Boston University
m.0bd2y5s, education.education.institution, Boston University
m.0hzv7ky, education.education.institution, Boston University
Martin Luther King, Jr., music.featured_artist.recordings, Freedom Dub
m.0wlgcnk, education.education.institution, Boston University
m.010lc2l3, education.honorary_degree.institution, University of Würzburg
m.0n0fj2c, education.education.institution, Boston University
m.05yzv4k, education.education.institution, Boston University
m.0j6hbdn, education.education.institution, Boston University
m.0n1kczm, education.education.institution, Boston University
m.0w5d6m5, education.education.institution, Boston University
m.04ysvmg, education.education.institution, Boston University
m.0bmyk86, education.education.institution, Boston University
m.02wmtnm, education.education.institution, Boston University
m.0w5kmhz, education.education.institution, Boston University
m.02wnbl4, education.education.institution, Boston University
m.02wny85, education.education.institution, Boston University
m.02wnnzr, education.education.institution, Boston University
m.02wmyvh, education.education.institution, Boston University
m.0hnzylr, education.education.institution, Boston University
m.0n0wfmy, education.education.institution, Boston University
m.0gz2kgg, education.education.institution, Boston University
m.0gmhfg3, education.education.institution, Boston University
m.0w5ktnv, education.education.institution, Boston University
m.0h28pnj, education.education.institution, Boston University
m.07lsz16, education.education.institution, Boston University
m.0bmyn0g, education.education.institution, Boston University
m.0n1l3wz, education.education.institution, Boston University
m.0svx9zn, education.education.institution, Boston University
m.0dw8l7m, education.education.institution, Boston University
m.0bvmzdy, education.education.institution, Boston University
m.0w59hmm, education.education.institution, Boston University
m.0w5l73y, education.education.institution, Boston University
m.02wnnbh, education.education.institution, Boston University
m.0zbwb1d, education.education.institution, Boston University
m.02wnl59, education.education.institution, Boston University
m.0hvb53h, education.education.institution, Boston University
m.0hnjdfm, education.education.institution, Boston University
m.06zy318, education.education.institution, Boston University
m.0dw0nrr, education.education.institution, Boston University
m.02wnmbb, education.education.institution, Boston University
m.02wncwd, education.education.institution, Boston University
m.02wnnk7, education.education.institution, Boston University
m.0w4b9b0, education.honorary_degree.institution, University of California, San Diego
m.02wnjk_, education.education.institution, Boston University
m.062yv0s, education.education.institution, Boston University
m.0czy7kp, education.education.institution, Boston University
m.04q5ntm, education.education.institution, Boston University
m.0hhy2y1, education.education.institution, Boston University
m.0w5lyyy, education.education.institution, Boston University
m.0g5bpwt, education.education.institution, Boston University
m.0n0yv0z, education.education.institution, Boston University
m.0h9b267, education.education.institution, Boston University
m.09vjnnm, education.education.institution, Boston University
m.0n0ck6c, education.education.institution, Boston University
m.0n17vh9, education.education.institution, Boston University
m.0n1mycm, education.education.institution, Boston University
m.0w5j3kt, education.education.institution, Boston University
m.05yzb81, education.education.institution, Boston University
m.02wphyc, education.education.institution, Boston University
m.02wndgr, education.education.institution, Boston University
m.0svt3mz, education.education.institution, Boston University
m.0n0bznj, education.education.institution, Boston University
m.0jzrpp7, education.education.institution, Boston University
m.02wnkyt, education.education.institution, Boston University
m.06wgfbg, education.education.institution, Boston University
m.0n1jdlm, education.education.institution, Boston University
m.02wn6bl, education.education.institution, Boston University
m.05yzrx5, education.education.institution, Boston University
m.0n12gvk, education.education.institution, Boston University
g.11bv5szz0p, education.education.institution, Boston University
m.0wjxlw8, education.education.institution, Boston University
m.02wny_b, education.education.institution, Boston University
m.0h6gkrx, education.education.institution, Boston University
m.0byk5xz, education.education.institution, Boston University
m.0n1hvvf, education.education.institution, Boston University
m.0g5txpk, education.education.institution, Boston University
m.0zbtnrv, education.education.institution, Boston University
m.0123vyxv, education.education.institution, Boston University
m.0btpfsv, education.education.institution, Boston University
m.0w5mwvj, education.education.institution, Boston University
m.0dh5sdv, education.education.institution, Boston University
m.04hjc8l, education.education.institution, Boston University
m.0gb0smr, education.education.institution, Boston University
m.0svybqm, education.education.institution, Boston University
m.0n0fdgy, education.education.institution, Boston University
m.0wkqwlh, education.education.institution, Boston University
m.03p80dr, education.education.institution, Boston University
m.0w598lg, education.education.institution, Boston University
m.0n0s_4b, education.education.institution, Boston University
m.06wgjzb, education.education.institution, Boston University
m.049yr5z, education.education.institution, Boston University
m.02kydy6, education.education.institution, Boston University
m.04hjt5w, education.education.institution, Boston University
m.0bqwjd2, education.education.institution, Boston University
m.0hhz5gh, education.education.institution, Boston University
m.0zfgqrx, education.education.institution, Boston University
m.0n3zhnl, education.education.institution, Boston University
m.0fpl3rt, education.education.institution, Boston University
m.0n1myl2, education.education.institution, Boston University
m.05yzvjj, education.education.institution, Boston University
m.0n0dbsb, education.education.institution, Boston University
m.0w5j2jn, education.education.institution, Boston University
m.02wnzln, education.education.institution, Boston University
m.0j4lzvq, education.education.institution, Boston University
m.0lcv5n8, education.education.institution, Boston University
m.0w5b5lt, education.education.institution, Boston University
m.0mzsx9h, education.education.institution, Boston University
m.05yzqq0, education.education.institution, Boston University
m.05y_bm6, education.education.institution, Boston University
m.0w1zbqg, education.honorary_degree.institution, University of Paris
m.0cv3bgz, education.education.institution, Boston University
m.0gz2ngc, education.education.institution, Boston University
m.0c9rkf0, education.education.institution, Boston University
m.0svxlc8, education.education.institution, Boston University
m.02wnrsz, education.education.institution, Boston University
m.02wnwhy, education.education.institution, Boston University
m.0svzypp, education.education.institution, Boston University
m.0n1749c, education.education.institution, Boston University
Freedom Dub, common.topic.notable_for, g.126t842b9
m.0n0xtc3, education.education.institution, Boston University
m.0bd2zxp, education.education.institution, Boston University
m.0h9b80h, education.education.institution, Boston University
m.012bkhwd, education.education.institution, Boston University
m.0h_g_18, education.education.institution, Boston University
m.0hzv8rf, education.education.institution, Boston University
m.0j9v9d8, education.education.institution, Boston University
m.09vlgky, education.education.institution, Boston University
m.0sw2hb7, education.education.institution, Boston University
m.02wpfym, education.education.institution, Boston University
m.0svwd8q, education.education.institution, Boston University
m.02wnlm5, education.education.institution, Boston University
m.0w5ljw3, education.education.institution, Boston University
m.0svymy5, education.education.institution, Boston University
m.05yz4k2, education.education.institution, Boston University
m.09vj8vh, education.education.institution, Boston University
m.0dh6h3b, education.education.institution, Boston University
m.0bmyqzg, education.education.institution, Boston University
m.0n0bd2y, education.education.institution, Boston University
m.0h57w5d, education.education.institution, Boston University
m.0bmyr6v, education.education.institution, Boston University
m.0w5lflz, education.education.institution, Boston University
m.0svywff, education.education.institution, Boston University
m.0gggj72, education.education.institution, Boston University
m.04hlygh, education.education.institution, Boston University
m.04hjwry, education.education.institution, Boston University
m.0zdb08c, education.education.institution, Boston University
m.02wn63c, education.education.institution, Boston University
m.0n0kxwm, education.education.institution, Boston University
m.0w5l7m2, education.education.institution, Boston University
m.09vjnvh, education.education.institution, Boston University
m.0znm49n, education.education.institution, Boston University
m.0svzydq, education.education.institution, Boston University
Freedom Dub, music.recording.featured_artists, Martin Luther King, Jr.
m.0dkbpmd, education.education.institution, Boston University
m.05yznph, education.education.institution, Boston University
m.0w54_9m, education.education.institution, Boston University
m.0bd2wwg, education.education.institution, Boston University
m.0jzrr4n, education.education.institution, Boston University
m.02wnj57, education.education.institution, Boston University
m.0h9bccg, education.education.institution, Boston University
m.02wnysz, education.education.institution, Boston University
m.07sk86c, education.education.institution, Boston University
m.0svwvth, education.education.institution, Boston University
m.02wpf24, education.education.institution, Boston University
m.0wf8rk0, education.education.institution, Boston University
m.0jx5sth, education.education.institution, Boston University
m.0n0sw_v, education.education.institution, Boston University
m.0zn8g68, education.honorary_degree.institution, Paris Dauphine University
m.05yzcx0, education.education.institution, Boston University
m.05yymbz, education.education.institution, Boston University
m.0gvw7z2, education.education.institution, Boston University
m.0dw0hmk, education.education.institution, Boston University
m.0645lph, education.education.institution, Boston University
m.02yzvp2, education.education.institution, Boston University
m.0h5jlt2, education.education.institution, Boston University
m.02wnr17, education.education.institution, Boston University
m.04hml5t, education.education.institution, Boston University
m.0dlqtk9, education.education.institution, Boston University
m.0n1hmyc, education.education.institution, Boston University
m.05yz4dl, education.education.institution, Boston University
m.0zcs5b6, education.education.institution, Boston University
m.0w5msb3, education.education.institution, Boston University
m.0w5j1sz, education.education.institution, Boston University
m.0n462ky, education.education.institution, Boston University
m.02wnymb, education.education.institution, Boston University
Recorded by, rdf-schema#range, Musical Artist
m.02wnngm, education.education.institution, Boston University
Freedom Dub, music.recording.tracks, Freedom Dub
m.04ystww, education.education.institution, Boston University
m.05yyjkp, education.education.institution, Boston University
m.05y_4dv, education.education.institution, Boston University
m.05yzl6v, education.education.institution, Boston University
m.04hhgtc, education.education.institution, Boston University
PhD, education.education.degree, m.02wp75f
m.0hhy2x4, education.education.institution, Boston University
m.0czvsv0, education.education.institution, Boston University
m.0dw0lz3, education.education.institution, Boston University
m.03p808c, education.education.institution, Boston University
m.0w5gvtl, education.education.institution, Boston University
m.02wnmt1, education.education.institution, Boston University
m.02wncvn, education.education.institution, Boston University
m.04hlpmb, education.education.institution, Boston University
m.02wnwdk, education.education.institution, Boston University
m.02wns3c, education.education.institution, Boston University
m.0n0ntgv, education.education.institution, Boston University
m.0bd2x1y, education.education.institution, Boston University
m.06zy3yd, education.education.institution, Boston University
m.0n45z4c, education.education.institution, Boston University
m.0n17vf8, education.education.institution, Boston University
m.09vjbqz, education.education.institution, Boston University
m.0w5l5lm, education.education.institution, Boston University
m.0n13h2y, education.education.institution, Boston University
m.0n0zqpt, education.education.institution, Boston University
m.0w5l_76, education.education.institution, Boston University
m.0h1jsyd, education.education.institution, Boston University
m.0n0lmqv, education.education.institution, Boston University
m.04hjwbw, education.education.institution, Boston University
m.0cpldjv, education.education.institution, Boston University
m.05yz55c, education.education.institution, Boston University
m.0w5gr3w, education.education.institution, Boston University
m.0w5h8b1, education.education.institution, Boston University
m.0646l27, education.education.institution, Boston University
m.0w5bngh, education.education.institution, Boston University
m.0hhy1cm, education.education.institution, Boston University
m.0hhy3wc, education.education.institution, Boston University
m.02_27cz, education.education.institution, Boston University
m.05yz26k, education.education.institution, Boston University
m.02wn4zy, education.education.institution, Boston University
m.0w5khr5, education.education.institution, Boston University
m.0w5m96c, education.education.institution, Boston University
m.0j3lnmv, education.education.institution, Boston University
m.05yz6r9, education.education.institution, Boston University
m.0n46cd3, education.education.institution, Boston University
Martin Luther King, Jr., people.person.education, m.02wp75f
m.0bmygks, education.education.institution, Boston University
m.0g5tzy3, education.education.institution, Boston University
m.0glwtqm, education.education.institution, Boston University
m.04m5yx5, education.education.institution, Boston University
m.07ltmwb, education.education.institution, Boston University
m.0whyydp, education.education.institution, Boston University
m.0sw3dhh, education.education.institution, Boston University
m.0w5jtqc, education.education.institution, Boston University
m.0n0cdvy, education.education.institution, Boston University
m.0gy3c92, education.education.institution, Boston University
m.07ltnmy, education.education.institution, Boston University
m.04mjyb5, education.education.institution, Boston University
m.05yzck2, education.education.institution, Boston University
m.0svwnr8, education.education.institution, Boston University
m.0bmyktl, education.education.institution, Boston University
m.09vjd8y, education.education.institution, Boston University
m.02wnx86, education.education.institution, Boston University
m.0wlrvkn, education.education.institution, Boston University
m.0zd97wr, education.education.institution, Harvard University
m.0svwtgq, education.education.institution, Boston University
m.05yzr1g, education.education.institution, Boston University
m.0n0gylf, education.education.institution, Boston University
m.0gy39pf, education.education.institution, Boston University
m.0hvrpf5, education.education.institution, Boston University
m.0svxch3, education.education.institution, Boston University
m.02wnzcb, education.education.institution, Boston University
m.07ltnvm, education.education.institution, Boston University
m.04ysvnx, education.education.institution, Boston University
m.02wmt57, education.education.institution, Boston University
m.06wghtf, education.education.institution, Boston University
m.0wkdwc8, education.education.institution, Boston University
m.0h6g872, education.education.institution, Boston University
m.02wnlgh, education.education.institution, Boston University
m.0667y9m, education.education.institution, Boston University
m.0w5mng0, education.education.institution, Boston University
m.05yzckd, education.education.institution, Boston University
m.0gmhfjg, education.education.institution, Boston University
m.0hnzxj5, education.education.institution, Boston University
m.06zy3c2, education.education.institution, Boston University
m.04hkrnl, education.education.institution, Boston University
m.0w5fnr2, education.education.institution, Boston University
m.0n0kjzf, education.education.institution, Boston University
m.05y_b2c, education.education.institution, Boston University
m.05hnqpr, education.education.institution, Boston University
m.0zfh2ht, education.education.institution, Boston University
m.0w5hyz8, education.education.institution, Boston University
m.012vz21h, education.education.institution, Boston University
m.02wn3gc, education.education.institution, Boston University
m.02wn3sw, education.education.institution, Boston University
m.0w5mhlp, education.education.institution, Boston University
m.0g5tz8w, education.education.institution, Boston University
m.0znmzxq, education.education.institution, Boston University
m.02wntt8, education.education.institution, Boston University
m.05y_5y8, education.education.institution, Boston University
m.0jxw4xd, education.education.institution, Boston University
m.06wjmjk, education.education.institution, Boston University
m.0svwzt9, education.education.institution, Boston University
m.02wnndr, education.education.institution, Boston University
m.0n1mhjn, education.education.institution, Boston University
m.07lfrh9, education.education.institution, Boston University
Zema, music.artist.track, Still Not Dubbin'?
m.0w5l854, education.education.institution, Boston University
m.02wn16y, education.education.institution, Boston University
m.0n169_b, education.education.institution, Boston University
m.0gmhhvz, education.education.institution, Boston University
m.0svxk6c, education.education.institution, Boston University
m.04yt8hz, education.education.institution, Boston University
m.02wpy45, education.education.institution, Boston University
m.02wmsnr, education.education.institution, Boston University
m.0hn_j8t, education.education.institution, Boston University
m.0n0gd4y, education.education.institution, Boston University
m.0h1qd0s, education.education.institution, Boston University
m.0hzv6h2, education.education.institution, Boston University
m.03p80cz, education.education.institution, Boston University
m.0svsvyn, education.education.institution, Boston University
m.0770pyb, education.education.institution, Boston University
m.02wnjnt, education.education.institution, Boston University
m.0czvvl9, education.education.institution, Boston University
m.05yzckk, education.education.institution, Boston University
m.0h9b8qh, education.education.institution, Boston University
m.02wnwz8, education.education.institution, Boston University
m.0svv93f, education.education.institution, Boston University
m.0gx3z83, education.education.institution, Boston University
m.09sccsf, education.education.institution, Boston University
m.0svv3nm, education.education.institution, Boston University
m.02wpgyl, education.education.institution, Boston University
m.0gvw8p9, education.education.institution, Boston University
m.0w5kt09, education.education.institution, Boston University
m.0w59hv8, education.education.institution, Boston University
Freedom Dub, common.topic.notable_types, Musical Recording
m.0dfh1hd, education.education.institution, Boston University
m.04hw3lg, education.education.institution, Boston University
m.0gvwb8d, education.education.institution, Boston University
m.0gl15xb, education.education.institution, Boston University
m.0gvwtkh, education.education.institution, Boston University
m.02wndr8, education.education.institution, Boston University
m.04hzrk5, education.education.institution, Boston University
m.0w59zsr, education.education.institution, Boston University
m.0n1lpnv, education.education.institution, Boston University
m.04ddmnx, education.education.institution, Boston University
Zema, music.artist.track, Freedom Dub

Answer: Boston University