PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The National Survey of Student Engagement provides another source of data about verifiable means to engage students in all types of learning situations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usablenet.com