With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: George H. W. Bush has a presidential library which was dedicated in 1997 and it is located in Texas.
text_B: Ascobulla fragilis is a species of sea snail , a marine gastropod sacoglossan mollusk in the family Volvatellidae .. Volvatellidae. Volvatellidae. Ascobulla. Ascobulla. species. species. sea snail. sea snail. marine. marine ( ocean ). gastropod. gastropod. mollusk. mollusk. The complete nucleotide sequence of the mitochondrial genome of Ascobulla fragilis has been available since 2008 .. Ascobulla. Ascobulla. nucleotide sequence. nucleotide sequence. mitochondrial genome. mitochondrial genome. Gavagnin et al. -LRB- 1994 -RRB- placed this species accidentally and erroneously in a different genus .. species. species
not_related.