With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul McCartney marred three times.
text_B: Saint-Aubin is a municipality in the district of Broye in the canton of Fribourg in Switzerland .. Broye. Broye ( district ). municipality. Municipalities of Switzerland. canton. Cantons of Switzerland. Fribourg. Fribourg ( canton ). Switzerland. Switzerland. On 1 January 1991 the former municipality of Les Friques merged into Saint-Aubin .. municipality. Municipalities of Switzerland
not_related.