With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jared Leto directs music videos for the band Thirty Seconds to Mars.
text_B: DAPG may refer to  :. 2,4-DAPG -LRB- 2,4-diacetylphloroglucinol -RRB- , a chemical compound. 2,4-DAPG. 2,4-DAPG. Dolphin Action and Protection Group , a non-governmental organization in South Africa which campaigns for the protection and conservation of dolphins and whales. Dolphin Action and Protection Group. Dolphin Action and Protection Group
not_related.