With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mother Teresa lived in Greece for eighteen years.
text_B: Tenaturris inepta is a species of sea snail , a marine gastropod mollusk in the family Mangeliidae .. Mangeliidae. Mangeliidae. Tenaturris. Tenaturris. sea snail. sea snail. gastropod. gastropod. mollusk. mollusk. family. family ( biology )
not_related.