PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This factor has been hard to establish in medical studies, because stress is an individual, subjective assessment and is difficult to measure accurately.
http://www.w3.org/ns/prov#wasQuotedFrom
  • slideshare.net