With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Legend of Tarzan (film) is based on a fictional person created by Edgar Rice Burroughs.
text_B: Emarginula punctulum is a species of sea snail , a marine gastropod mollusk in the family Fissurellidae , the keyhole limpets .. Fissurellidae. Fissurellidae. Emarginula. Emarginula. species. species. sea snail. sea snail. gastropod. gastropod. mollusk. mollusk. family. family ( biology )
not_related.