PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cell phone and wifi and radar and other examples work precisely because we use the part of the signal that does NOT get absorbed/reflected/scattered as it passes through the atmosphere.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wattsupwiththat.com