With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Armadillo World Headquarters was an Austin music venue.
text_B: Chengguan is a town and the county seat of Mengcheng County , northwestern Anhui province , East China .. China. China. Anhui. Anhui. County. County ( People's Republic of China ). Mengcheng County. Mengcheng County. town. Town ( China )
not_related.