With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Winnipeg is the residence of the Winnipeg Blue Bombers.
text_B: Studies of Flowers from Nature is a 19th-century botanical copybook notable for the high quality of its illustrations by an artist known only as `` Miss Smith . ''. copybook. copybook ( education )
not_related.