PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Clustering is a technique whereby knowledge of a user's information retrieval searches is added to the user profile in the form of a cluster index which maintains the results of the user's searches according to topics, or families, describing the information or documents returned.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com