With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bill Gates is a co-founder of  a tech company.
text_B: Glyphostoma thalassoma is a species of sea snail , a marine gastropod mollusk in the family Clathurellidae .. Clathurellidae. Clathurellidae. Glyphostoma. Glyphostoma. sea snail. sea snail. gastropod. gastropod. mollusk. mollusk. family. family ( biology )
not_related.