With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: FC Barcelona won the UEFA European Championship in 2011.
text_B: Notata zumkehri is a moth in the family Erebidae .. moth. moth. Erebidae. Erebidae. It was described by de Vos and Mastrigt in 2007 .. It is found in Papua New Guinea .. Papua New Guinea. Papua New Guinea. The wingspan is about 15 mm .. wingspan. wingspan. Adults are white , but males have dark brown spots at the underside of the wings .
not_related.