With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Philadelphia is the birthplace of the Frisbee.
text_B: Jorge Ben a l'Olympia is a 1975 live album by Brazilian artist Jorge Ben Jor recorded at Olympia .. Jorge Ben. Jorge Ben. Jorge Ben Jor. Jorge Ben Jor. Olympia. Olympia ( Paris )
not_related.