With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Coldplay have supported various economic and judicial causes.
text_B: Open Up Your Heart is an album by Buck Owens and his Buckaroos , released in 1966 .. Buck Owens. Buck Owens. his Buckaroos. The Buckaroos. It reached Number one on the Billboard Country Albums chart .. Country. Country music. Billboard. Billboard charts. It was re-released on CD in 1995 by Sundazed Records .. Sundazed Records. Sundazed Records
not_related.