<https://codes.findlaw.com/cfr/title-36-parks-forests-and-public-property/cfr-sect-36-9-81/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://codes.findlaw.com/cfr/title-36-parks-forests-and-public-property/cfr-sect-36-9-81/>