With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jensen Ackles was relieved on March 1, 1978.
text_B: Pottsville Downtown Historic District is a national historic district located at Pottsville , Schuylkill County , Pennsylvania .. historic district. Historic district ( United States ). Pottsville. Pottsville, Pennsylvania. The district includes 336 contributing buildings in the central business district and surrounding residential areas of Pottsville .. Pottsville. Pottsville, Pennsylvania. central business district. central business district. It was added to the National Register of Historic Places in 1982 .. National Register of Historic Places. National Register of Historic Places
not_related.