With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Harry Potter and the Deathly Hallows is the final novel of the Harry Potter series that began in 1997.
text_B: The tenth and final season of Friends , an American sitcom created by David Crane and Marta Kauffman , premiered on NBC on September 25 , 2003 .. NBC. NBC. Friends. Friends. sitcom. sitcom. David Crane. David Crane ( producer ). Marta Kauffman. Marta Kauffman. Friends was produced by Bright / Kauffman / Crane Productions , in association with Warner Bros. .. Friends. Friends. Bright / Kauffman / Crane Productions. Bright / Kauffman / Crane Productions. Television .. The season contains 18 episodes and concluded airing on May 6 , 2004 .
not_related.