With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The 84th Academy Awards' winners included Oscar Isaac.
text_B: The 2013 Challenge Bell was a tennis tournament played on indoor carpet courts .. tennis. tennis. Challenge Bell. Tournoi de Quebec. It was the 21st edition of the Challenge Bell , and was part of the WTA International tournaments of the 2013 WTA Tour .. WTA International. WTA International tournaments. Challenge Bell. Tournoi de Quebec. WTA International tournaments. WTA International tournaments. 2013 WTA Tour. 2013 WTA Tour. It took place at the PEPS de l'Universite Laval in Quebec City , Canada , from September 9 through September 15 , 2013 .. Quebec City. Quebec City. PEPS de l'Universite Laval. PEPS. Canada. Canada
not_related.