Question: What hydroelectric dam located on the Little Tennessee River in Swain and Graham counties, North Carolina, United States is home to MINIs on the Dragon is an annual gathering of MINI Coopers in Robbinsville, North Carolina? 
Sentence (from "Fontana Dam"): Fontana Dam is a hydroelectric dam on the Little Tennessee River in Swain and Graham counties, North Carolina, United States.
Relevant evidence: Yes