With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Chicago is a city in the United States.
text_B: Carlephyton glaucophyllum is a species of arum endemic to Madagascar .. Carlephyton. Carlephyton. arum. Araceae. endemic. Endemism. Madagascar. Madagascar. It differs from the two other species in the genus in that it has some bisexual flowers present concurrent to the female flowers .. It has a short spadix and the leaves are glaucous .. spadix. Spadix ( botany ). glaucous. glaucous. It grows in its natural range at altitudes from 150 m to 200 m and flowers in December .. It is typically found growing in clusters .. The berries are possibly yellowish .. It was described by Josef Bogner in 1972 .. Bogner. Josef Bogner. Josef Bogner. Josef Bogner. Category  : Aroideae. Aroideae. Aroideae. Category  : Endemic flora of Madagascar. Madagascar. Madagascar. Category  : Plants described in 1972
not_related.