With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Richard Branson's Virgin picture grew rapidly during the 1980s.
text_B: Cerithiopsis petanii is a species of sea snail , a gastropod in the family Cerithiopsidae .. Cerithiopsidae. Cerithiopsidae. Cerithiopsis. Cerithiopsis. sea snail. sea snail. gastropod. gastropod. It was described by J. Prkic and P. Mariottini in 2010 , and is known from Croatia .. Croatia. Croatia
not_related.