With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tim Rice wrote anything except a musical.
text_B: NGC 203 is a lenticular galaxy located in the constellation Pisces .. NGC. New General Catalogue. Pisces. Pisces ( constellation ). lenticular galaxy. lenticular galaxy. It was discovered on December 19 , 1873 by Ralph Copeland .. Ralph Copeland. Ralph Copeland
not_related.