With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lewis Friedman wrote a documentary about Bob Marley.
text_B: Yone Kamio -LRB- born November 22 , 1971 in Yokohama -RRB- is a retired Japanese tennis player who competed on the WTA Tour .. Yokohama. Yokohama. tennis. tennis. WTA Tour. WTA Tour. She attained a career-best ranking of # 24 in the world in October 1995 .. That year , she reached the third round of the Australian Open , Wimbledon , and the U.S. Open .. Australian Open. Australian Open. Wimbledon. The Championships, Wimbledon. U.S. Open. US Open ( tennis )
not_related.