PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The fact that these messages are so deliberately vague is consistent with the theory that they are still unable to detect a large fraction of all unnatural links, and therefore they can not tell you about the ones they have detected (because the types of links that are NOT listed in the warning messages would be obvious to the folks building the unnatural links).
http://www.w3.org/ns/prov#wasQuotedFrom
  • webmasterworld.com