With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dungeons & Dragons was published by Tactical Studies Rules, Inc.
text_B: Macropelopia nebulosa is a species of fly in the family Chironomidae .. Chironomidae. Chironomidae. Macropelopia. Macropelopia. fly. fly. It is found in the Palearctic .. Palearctic. Palearctic
not_related.