With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: But during the opening session Japan 's chief negotiator , Kenichiro Sasae , raised the issue of North Korea 's abduction of Japanese citizens during the 1970s and 80s , despite objections from South Korea .
text_B: North Korea is a time on the clock
not-entailed.