PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • These lasers are particularly promising, not just for their speed and size, but because they operate at low thresholds ??? they do not use much energy.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stanford.edu