PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A problem is an explicit statement of a desired goal (e.g. the 3 Breakthrough Propulsion Physics program goals) or explicit observations of an anomalous effect which cannot be explained using the established knowledge base.
http://www.w3.org/ns/prov#wasQuotedFrom
  • padrak.com