With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Billy Bob Thornton was in a modern western neo-noir crime thriller movie.
text_B: The 1999 AT&T Challenge was a men 's tennis tournament played on Clay in Atlanta , Georgia , United States that was part of the World Series of the 1999 ATP Tour .. Clay. Clay court. World Series. ATP International Series. Atlanta. Atlanta. tennis. tennis. Georgia. Georgia ( U.S. state ). 1999 ATP Tour. 1999 ATP Tour. It was the fourteenth edition of the tournament and was held from 26 April -- 2 May 1999 .
not_related.