With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Water is found in seas and oceans of Mars.
text_B: Ischnochiton oniscus , the dwarf chiton , is a small polyplacophoran mollusc in the family Ischnochitonidae , endemic to the coast of southern Africa .. Ischnochitonidae. Ischnochitonidae. Ischnochiton. Ischnochiton. polyplacophoran. chiton. mollusc. mollusc. family. family ( biology )
not_related.