With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Back to back episodes were had by The Carmichael Show.
text_B: The Snooker Shoot-Out is a professional ranking snooker tournament played under a variation of the standard rules .. ranking. Snooker world rankings. snooker. snooker. The 2017 event is the first time that the tournament was staged as a ranking event .. ranking. Snooker world rankings. 2017 Snooker Shoot-Out. Anthony McGill is the defending champion .. Anthony McGill. Anthony McGill ( snooker player )
not_related.