PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • I remember having read a article in The Economist's Science and Technology section that presented evidence to the effect that attention and learning benefits from some forms of eye contact.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackexchange.com