With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michelle Williams is a singer.
text_B: Ralph G. Nevins -LRB- 1924 -- 1973 -RRB- was an American professor of mechanical engineering and Chair of the Mechanical Engineering Department and Dean of the College of Engineering at Kansas State University , Manhattan , Kansas .. Kansas. Kansas. American. United States. professor. professor. mechanical engineering. mechanical engineering. Dean. Dean ( education ). Kansas State University. Kansas State University
not_related.