PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • viviandnguyen / FlickrIn our 24/7 culture, sleep loss is a major problem.
http://www.w3.org/ns/prov#wasQuotedFrom
  • businessinsider.com