With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ava DuVernay directs films.
text_B: Curious Buddies is an American children 's television series originally airing on Nickelodeon as part of the Nick Jr. block .. Nickelodeon. Nickelodeon. The series premiered on August 31 , 2004 , and ended on April 12 , 2005 .. The series was also the recipient of a Spring 2005 Parents ' Choice Award .
not_related.