With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Council on Foreign Relations was created in 1921.
text_B: Arlington Downs was an American horse racing track located in Arlington , Texas in Tarrant County , approximately 20 mi from downtown Fort Worth , Texas .. American. United States. horse racing. horse racing. Tarrant County. Tarrant County, Texas. The $ 3 million facility , a 1 1 / 4 - mile track with a 6,000-seat grandstand , was constructed on William T. Waggoner 's 3D 's Stock Farm , and opened on November 1 , 1929 .
not_related.