With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Mughal Empire was located in southern Asia.
text_B: Baltic and Tyle ` r-bont Quarries is a Site of Special Scientific Interest in Brecknock , Powys , Wales .. Site of Special Scientific Interest. Site of Special Scientific Interest. Brecknock. Brecknock. Powys. Powys. Wales. Wales
not_related.