With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Chainsmokers made a single that got to number one.
text_B: Rufus King -LRB- January 26 , 1814 -- October 13 , 1876 -RRB- was a newspaper editor , public servant , U.S. diplomat , and a Union brigadier general in the American Civil War .. Union. Union ( American Civil War ). American Civil War. American Civil War. brigadier general. Brigadier general ( United States )
not_related.