With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The University of Oxford operates the second oldest university press in the world.
text_B: Nipponacmea schrenckii is a species of sea snail , a true limpet , a marine gastropod mollusk in the family Lottiidae , one of the families of true limpets .. Lottiidae. Lottiidae. Nipponacmea. Nipponacmea. species. species. sea snail. sea snail. true limpet. true limpet. gastropod. gastropod. mollusk. mollusk. family. family ( biology )
not_related.