With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mike Tyson was disqualified from a match.
text_B: Abelardo Aguilu , Jr. -LRB- c. 1870 - c. 1940 -RRB- was Mayor of Ponce , Puerto Rico from 1924 to 1925 .. Prior to that he was a shopkeeper in Ponce , selling groceries , liquor , and tobacco .. shopkeeper. shopkeeper
not_related.