About: http://webisa.webdatacommons.org/200014513

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	However, other methods can be used, such as celestial objects and GPS, which makes the concept redundant.
http://www.w3.org/ns/prov#wasQuotedFrom	af.mil