Question: In what year did the Chickasaw Nation open Win Star World Casino just 100 miles away from Chisholm Trail Casino?
Sentence (from "WinStar World Casino"): In August 2013, WinStar Resorts completed a major expansion project, which added a new 1000-room second hotel tower that was divided into two phases; this also added a new casino that is attached to the tower.
Relevant evidence: No