With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Nelson Mandela's middle name was Rolihlahla.
text_B: Philpot Lane is a short street in London , running from Fenchurch Street to Eastcheap .. London. London. Fenchurch Street. Fenchurch Street. Eastcheap. Eastcheap. It is named after Sir John Philpot , former Lord Mayor of the City of London -LRB- 1378-9 -RRB- .. London. London. John Philpot. John Philpot ( alderman ). City of London. City of London. It is also home to London 's tiniest public statue ; ` The Two Mice Eating Cheese ' , which is situated near the junction of Eastcheap .. London. London. Eastcheap. Eastcheap
not_related.