With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Justin Bieber's fourth album came out in November of 2015.
text_B: Parornix kumatai is a moth of the Gracillariidae family .. Gracillariidae. Gracillariidae. Parornix. Parornix. moth. moth. It is known from Dagestan and the Russian Far East .. Dagestan. Dagestan. Russian Far East. Russian Far East. The larvae feed on Crataegus maximowiczii .. Crataegus maximowiczii. Crataegus maximowiczii. They probably mine the leaves of their host plant .. mine. leaf miner
not_related.