About: http://webisa.webdatacommons.org/17725913

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Books and other publications that address a story at length and in-depth are expensive to produce and usually only feasible if sold.
http://www.w3.org/ns/prov#wasQuotedFrom	nps.gov