PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There is such a thing as solar wind, but as Friedman explained, ???Solar wind is electrons and protons that come from the sun, and they have mass, but they go very much slower than light.???
http://www.w3.org/ns/prov#wasQuotedFrom
  • centauri-dreams.org