With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sarcoidosis does not occur more often in women than men.
text_B: Microdrillia niponica is a species of sea snail , a marine gastropod mollusk in the family Borsoniidae .. sea snail. sea snail. gastropod. gastropod. mollusk. mollusk. family. family ( biology ). Borsoniidae. Borsoniidae
not_related.