With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: In the Heart of the Sea premiered in London.
text_B: Myrmecomelix is a genus of spiders in the Linyphiidae family .. Linyphiidae. Linyphiidae. It was first described in 1993 by Millidge .. , it contains 2 species .
not_related.