PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • CEOs are, in fact, increasingly posting on social media including Twitter; see 140 Characters of Risk: Some CEOs Fear Twitter, from the Wall Street Journal this past September.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mit.edu