With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bill Black's son's name is William.
text_B: Paedocypris carbunculus is a species of cyprinid fish endemic to Borneo .. Paedocypris. Paedocypris. cyprinid. cyprinid. endemic. endemism. Borneo. Borneo. species. species. It is the most recently described species of the three in the genus Paedocypris .. Paedocypris. Paedocypris. species. species. genus. genus
not_related.