With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Berlin is located in the European Plain.
text_B: Batrachedra microdryas is a species of moth of the Batrachedridae family .. Batrachedridae. Batrachedridae. Batrachedra. Batrachedra. moth. moth. It is found in Australia .. Australia. Australia
not_related.