With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: San Francisco is formally known as the City and County of San Diego.
text_B: Dhaipai is a village located in the Ludhiana West tehsil , of Ludhiana district , Punjab .. Punjab. Punjab India. Ludhiana. Ludhiana district. Ludhiana West. Villages in Ludhiana West Tehsil. Ludhiana district. Ludhiana district
not_related.