With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Oh Yeon-seo is a former member of LUV.
text_B: Dead in a Heartbeat is a television film that was originally aired on TBS on March 3 , 2002 .. TBS. TBS ( TV Network ). The film is about Dr. Gillian Hayes , a heart surgeon , and Lt. Tom Royko , an officer of the bomb squad .. bomb squad. bomb squad. bomb. bomb. The two must attempt to prevent Dr. Hayes ' patients ' artificial pacemakers , which have been implanted with bombs , from exploding .
not_related.