With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Boston Celtics won the 1983-84 season.
text_B: Amos Leon Thomas , Jr. -LRB- October 4 , 1937 -- May 8 , 1999 -RRB- was an American avant-garde jazz singer from East St. Louis , Illinois .. American. United States. avant-garde. avant-garde. jazz. jazz
not_related.