With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: BitTorrent has been used by Radiohead.
text_B: Emma Bristow -LRB- born 29 October 1990 in Boston , Lincolnshire , United Kingdom -RRB- , is an International motorcycle trials rider and current Women 's World Champion .. United Kingdom. United Kingdom. In 2014 Emma became the first British rider to win the Women 's FIM Trial World Championship .. FIM Trial World Championship. FIM Trial World Championship. She also won the Women 's FIM Trial European Championship in 2013 and the British Women 's title in 2014 .. FIM Trial European Championship. FIM Trial European Championship
not_related.