With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Roald Dahl was unqualified to ever become an acting wing commander.
text_B: Gymnodanio strigatus is a species of cyprinid fish only found in the Mekong River in Yunnan , China .. cyprinid. cyprinid. Mekong River. Mekong River. Yunnan. Yunnan. China. China. It is the only described member of its genus .
not_related.