PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • e.g. How often do you see ???light is an electromagnetic wave??? in a popular account, with no more explanation than that maxwell said so?
http://www.w3.org/ns/prov#wasQuotedFrom
  • discovermagazine.com