PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Here are some extracts from that link: ....Tesla's diary contains explanations of his experiments concerning the ionosphere and the ground's telluric currents via transverse waves and longitudinal waves.[62] At his lab, Tesla proved that the earth was a conductor,....
http://www.w3.org/ns/prov#wasQuotedFrom
  • allaboutcircuits.com