With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Beautiful reached number two on the Billboard Hot 100.
text_B: Boletus abruptibulbus is a species of bolete mushroom in the family Boletaceae .. Boletaceae. Boletaceae. Boletus. Boletus. bolete. bolete. Described as new to science in 2009 , it is found only in the Gulf Coast of the Florida Panhandle , where it grows on the ground in coastal sand dunes , one of only three North American boletes known to favor this habitat .. Florida Panhandle. Florida Panhandle. Gulf Coast. Gulf Coast. The fruit bodies have convex brownish caps up to 8 cm in diameter , supported by solid yellowish to reddish stems measuring 3 -- long by 10 -- thick .. fruit bodies. basidiocarp. caps. pileus ( mycology ). stems. stipe ( mycology ). The pores on the underside of the cap measure about 1 -- 2 mm in diameter and are initially pale yellow before developing a greenish tinge in age .. The mushroom 's spores , about 20 micrometers long , are unusually long for a member of the Boletaceae .. Boletaceae. Boletaceae. micrometers. micrometre. The stem base is bulbous , a diagnostic feature for which the species is named .
not_related.