With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Gong Yoo is best known by his stage name.
text_B: Boucardicus ambindaensis is a species of land snail with an operculum , a terrestrial gastropod mollusk in the family Cyclophoridae .. Cyclophoridae. Cyclophoridae. Boucardicus. Boucardicus. species. species. land snail. land snail. operculum. Operculum ( gastropod ). terrestrial. terrestrial molluscs. gastropod. gastropod. mollusk. mollusk. This species is endemic to Madagascar , occurs in Tsingy Beanka reserve , around 50 km east of Maintirano city .. species. species. endemic. Endemism. Madagascar. Madagascar. Maintirano. Maintirano
not_related.