With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Malcolm Young co-founded AC/DC.
text_B: Homalium taypau is a species of plant in the Salicaceae family .. Salicaceae. Salicaceae. Homalium. Homalium. plant. plant. It is endemic to Pitcairn .. endemic. Endemism. Pitcairn. Pitcairn. It is threatened by habitat loss .. habitat loss. habitat loss
not_related.