With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tamara Taylor was born in Canada.
text_B: Ruel Vance Churchill -LRB- 12 December 1899 , Akron , Indiana -- 31 October 1987 , Ann Arbor , Michigan -RRB- was an American mathematician known for writing three widely used textbooks on applied mathematics .. In 1922 Churchill received his undergraduate degree from the University of Chicago .. University of Chicago. University of Chicago. In 1929 he received his PhD from the University of Michigan under George Rainich with thesis On the Geometry of the Riemann Tensor .. University of Michigan. University of Michigan. George Rainich. George Yuri Rainich. He spent his entire career as a member of the U. of Michigan mathematics faculty and retired in 1965 as professor emeritus .. His doctoral students include Earl D. Rainville .. Earl D. Rainville. Earl D. Rainville
not_related.