With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Batman was published by 20th Century Fox.
text_B: Spilarctia harlequina is a moth in the family Erebidae .. moth. moth. Erebidae. Erebidae. It was described by Cerny in 2011 .. It is found in the Philippines .. Philippines. Philippines
not_related.