With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Shingles and herpes are not viruses.
text_B: Pozonia is a genus of spiders in the Araneidae family .. Araneidae. Araneidae. It was first described in 1953 by Schenkel .. , it contains 5 species .
not_related.