Please answer the following question: Combine facts and answer this: Songcatcher is a 2000 drama film directed by Maggie Greenwald, although a fictional film, it is loosely based on the work of Olive Dame Campbell, founder of which school, founded to nurture and preserve the folk arts of the Appalachian Mountains, and is located near Brasstown, North Carolina along the Cherokee County and Clay line?
A:
John C. Campbell Folk School