PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ???Indeed, most students today rarely use email, preferring instant messaging, Facebook, Myspace, and other private messaging attached to a proprietary service.???
http://www.w3.org/ns/prov#wasQuotedFrom
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