With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dogs have been bred selectively for sensory capabilities.
text_B: Myrtale is a genus of moths of the Noctuidae family .. Noctuidae. Noctuidae. genus. genus. It is now considered a synonym of Platysenta .. Platysenta. Platysenta
not_related.