With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Black Sabbath was only formed by 4 lawyers.
text_B: Niphothixa niphadacra is a species of moth of the family Tortricidae .. Tortricidae. Tortricidae. Niphothixa. Niphothixa. moth. moth. It is found on Madagascar .. Madagascar. Madagascar
not_related.