With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Voice is a competition.
text_B: Culham Lock is a lock on the River Thames in England close to Culham , Oxfordshire .. River Thames. River Thames. Oxfordshire. Oxfordshire. lock. lock ( water transport ). Culham. Culham. It is on a lock cut to the north of the main stream , which approaches the large village of Sutton Courtenay .. lock. lock ( water transport ). Sutton Courtenay. Sutton Courtenay. The lock was built of stone by the Thames Navigation Commission in 1809 .. lock. lock ( water transport ). Thames Navigation Commission. Thames Navigation Commission. The associated weirs are on the old course of the river under the massive causeway which separates the millstream from picturesque Sutton Pools .. Sutton Pools. Sutton Pools. The causeway is very old and was thought to have been built by Saxon labour. Saxon. Anglo-Saxons
not_related.