International Children's Festival at Wolf Trap
The festival is held each September at Wolf Trap National Park for the Performing Arts in Fairfax County , Virginia , which is the United States' only national park devoted solely to the performing arts . 
<triplet> Wolf Trap National Park for the Performing Arts <subj> Fairfax County <obj> located in the administrative territorial entity <triplet> Fairfax County <subj> Virginia <obj> located in the administrative territorial entity <triplet> Virginia <subj> Fairfax County <obj> contains administrative territorial entity