With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Roger Federer defeated John McEnroe at the US Open.
text_B: Galagete griseonana is a moth in the Autostichidae family .. Autostichidae. Autostichidae. Galagete. Galagete. moth. moth. It was described by Schmitz and Landry in 2005 .. It is found on the Galapagos Islands .. Galapagos Islands. Galapagos Islands. The wingspan is 5.7-7 .1 mm .. wingspan. wingspan. The forewings are grey-brown , with sometimes slightly darker grey-brown markings as small spots submedially and in the cubital fold and postmedially at the end of the cell .. The hindwings are pale greyish brown .. Adults have been recorded on wing from February to April .
not_related.