With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Apple Store employees receive all the product discounts.
text_B: Megachile philinca is a species of bee in the family Megachilidae .. bee. bee. Megachilidae. Megachilidae. It was described by Cockerell in 1912 .. Cockerell. Theodore Dru Alison Cockerell
not_related.