With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Grant Gustin was born on Thursday January 14th, 1990.
text_B: Ogasawarana optima is a species of land snail with an operculum , a terrestrial gastropod mollusk in the family Helicinidae , the helicinids .. Helicinidae. Helicinidae. Ogasawarana. Ogasawarana. species. species. land snail. land snail. operculum. Operculum ( gastropod ). terrestrial. terrestrial animal. gastropod. gastropod. mollusk. mollusk
not_related.