With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The pilot episode of The Blacklist was directed by someone involved in 21 Jump Street.
text_B: Candidula castriota is a species of air-breathing land snail , a terrestrial pulmonate gastropod mollusk in the family Hygromiidae , the hairy snails and their allies .. Hygromiidae. Hygromiidae. Candidula. Candidula. species. species. land snail. land snail. terrestrial. terrestrial animal. pulmonate. pulmonate. gastropod. gastropod. mollusk. mollusk
not_related.