With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Josh Duhamel does acting as a profession.
text_B: The third series of The Great British Sewing Bee began on 5 February 2015 and will air for 6 episodes .. The Great British Sewing Bee. The Great British Sewing Bee. Claudia Winkleman returned to present alongside resident judges May Martin and Patrick Grant .. Claudia Winkleman. Claudia Winkleman. Patrick Grant. Patrick Grant ( designer )
not_related.