With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Conor McGregor is signed to the Ultimate Fighting Championship.
text_B: Massimo Giunti -LRB- born 29 July 1974 in Pesaro -RRB- is a former Italian cyclist .. Pesaro. Pesaro. He tested positive for EPO in March 2010 .
not_related.