With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Andre Agassi won all four Grand Slam tournaments on three different surfaces.
text_B: Borough Road is in Southwark , London SE1 .. Southwark. Southwark. London. London. SE1. SE postcode area. It runs east-west between St George 's Circus and Borough High Street .. Borough High Street. Borough High Street. TOC
not_related.