With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Robert Richardson has only ever collaborated with women.
text_B: Prisomera ignava , is a species of phasmid or stick insect of the genus Prisomera .. Prisomera. Prisomera. species. species. phasmid. Phasmatodea. It is found in Sri Lanka .. Sri Lanka. Sri Lanka
not_related.