With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Manchester City F.C. isn't one of the wealthiest clubs in the world.
text_B: Lodderena ornata is a species of minute sea snail , a marine gastropod mollusk in the family Skeneidae .. species. species. sea snail. sea snail. gastropod. gastropod. mollusk. mollusk. family. family ( biology ). Skeneidae. Skeneidae
not_related.