PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Use "? (mh-help)" and "X ? (mh-prefix-help)," where X is a prefix
http://www.w3.org/ns/prov#wasQuotedFrom
  • apple.com