With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Chainsmokers refuse to be DJs.
text_B: The 2015 -- 16 British Basketball League season was the 29th campaign of the British Basketball League since the league 's establishment in 1987 .. British Basketball League. British Basketball League. Basketball. Basketball. The season featured 12 teams from across England and Scotland .
not_related.