With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Android has been involved in the skirmishes of MP3 players.
text_B: Prospect is a borough in Butler County , Pennsylvania , United States .. United States. United States. Pennsylvania. Pennsylvania. County. List of counties in Pennsylvania. Butler. Butler County, Pennsylvania. borough. borough ( Pennsylvania ). Butler County. Butler County, Pennsylvania. As of the 2010 census , the borough had a population of 1,169 .. borough. borough ( Pennsylvania )
not_related.