With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: James Arness was a Virginian.
text_B: Eurypteryx falcata is a moth of the family Sphingidae .. Sphingidae. Sphingidae. Eurypteryx. Eurypteryx. moth. moth. It is known from Papua New Guinea .. Papua New Guinea. Papua New Guinea
not_related.