With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ballet Shoes premiered on BBC One.
text_B: Donje Zapsko is a village in the municipality of Vranje , Serbia .. Vranje. Vranje ( municipality ). village. village. municipality. Municipalities of Serbia. Serbia. Serbia. According to the 2002 census , the village has a population of 421 people .. village. village
not_related.