With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Syd Barrett was the lead guitarist for Pink Floyd.
text_B: Cairo Roberto da Lima - also known as Cairo Lima only - -LRB- born 16 September 1976 in Uberlandia -RRB- is a Brazilian football manager and former player .. Uberlandia. Uberlandia. football. Association football. Capable of playing both as a defender or midfielder , he had his greatest successes with Atletico Minero , and also played for other Brazilian clubs , such as Parana , Avai and Ceara .. Parana. Parana Clube. Avai. Avai FC. Ceara. Ceara Sporting Club. defender. Defender ( association football ). midfielder. midfielder. Atletico Minero. Atletico Minero. After retiring from professional football , he has appointed as an assistant coach to Ricardo Drubscky with Volta Redonda and Atletico Paranaense , and led the team U-23 .. Volta Redonda. Volta Redonda Futebol Clube. football. Association football. Atletico Paranaense. Clube Atletico Paranaense. He later maanged Volta Redonda where he managed to unexpectedly reach the semi-finals of the Taca Rio in 2013 .. Volta Redonda. Volta Redonda Futebol Clube. Taca Rio. Taca Rio. After six years he returned to coach Volta Redonda in 2016 , in an attempt to repeat his success .. Volta Redonda. Volta Redonda Futebol Clube
not_related.