PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Within two years, highly efficient fuel cells should be generating the electricity needed in satellites and space probes to run communication and other electronic equipment.
http://www.w3.org/ns/prov#wasQuotedFrom
  • modernmechanix.com