With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Guntur district is not located within Andhra Pradesh.
text_B: Joseph Clarke , FRIBA -LRB- 1819 / 20 -- 81 -RRB- was a British Gothic Revival architect who practised in London , England .. Gothic Revival architect. Gothic Revival architecture. London. London
not_related.