With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Huntington's disease research is not being conducted on non-human animals.
text_B: P. lagunensis may refer to  :. Plestiodon lagunensis , a skink native to the Baja California peninsula. Plestiodon lagunensis. Plestiodon lagunensis. Praemancalla lagunensis , an extinct bird. Praemancalla lagunensis. Praemancalla lagunensis
not_related.