With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Neil Patrick Harris never hosted the Academy Awards.
text_B: Kurtoxin is a toxin found in the venom of the scorpion Parabuthus transvaalicus .. Parabuthus transvaalicus. Parabuthus transvaalicus. It affects the gating of voltage-gated sodium channels and calcium channels .. sodium channels. sodium channels. calcium channels. calcium channels
not_related.