With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The 2014 WTA Finals took place in Singapore.
text_B: Caio Magalhaes -LRB- born December 14 , 1987 -RRB- is a Brazilian professional mixed martial artist , currently fighting in the Middleweight division for the Ultimate Fighting Championship .. Brazilian. Brazilian people. Middleweight. Middleweight ( MMA ). mixed martial artist. mixed martial arts. Ultimate Fighting Championship. Ultimate Fighting Championship
not_related.