With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Iron Fist started development in 2013.
text_B: Petrophila aealis is a moth in the Crambidae family .. Crambidae. Crambidae. Petrophila. Petrophila. moth. moth. It was described by Walker in 1859 .. Walker. Francis Walker ( entomologist ). It is found in Brazil -LRB- Rio de Janeiro -RRB- .. Brazil. Brazil
not_related.