With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Rebecca Ferguson was nominated for a Golden Globe.
text_B: Joseph Leo `` Joe '' Doob -LRB- February 27 , 1910 -- June 7 , 2004 -RRB- was an American mathematician , specializing in analysis and probability theory .. American. United States of America. mathematician. mathematician. analysis. Mathematical analysis. probability. probability. The theory of martingales was developed by Doob .
not_related.