PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Instead, the nofollow attribute is primarily used by site authors to prevent Search Engines such as Google from having the source page???s PageRank impact the PageRank of linked targets.
http://www.w3.org/ns/prov#wasQuotedFrom
  • commoncrawl.org