With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boston Latin School is the oldest school in the United States.
text_B: Allomarkgrafia ecuatoriana is a species of plant in the Apocynaceae family .. Apocynaceae. Apocynaceae. Allomarkgrafia. Allomarkgrafia. plant. plant. It is endemic to Ecuador .. endemic. Endemism. Ecuador. Ecuador. Its natural habitat is subtropical or tropical moist lowland forests .. habitat. habitat. It is threatened by habitat loss .. habitat. habitat. habitat loss. habitat loss
not_related.