National Recreation Trail
The National Park Service ( part of the United States Department of the Interior ) and the United States Forest Service ( part of the United States Department of Agriculture ) jointly administer the National Recreation Trails Program with help from a number of other federal and nonprofit partners , notably American Trails , the lead nonprofit for developing and promoting NRTs . 
<triplet> National Park Service <subj> United States Department of the Interior <obj> parent organization <triplet> United States Department of the Interior <subj> National Park Service <obj> subsidiary <triplet> United States Forest Service <subj> United States Department of Agriculture <obj> part of <triplet> United States Department of Agriculture <subj> United States Forest Service <obj> subsidiary