PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • These ideas, of optimizing for concepts rather than keywords, and taking advantage of subtler types of behavior such as the peripheral vision of the searcher, could lead to a whole new level of search optimization for those search marketers willing to invest the time to experiment.
http://www.w3.org/ns/prov#wasQuotedFrom
  • searchenginewatch.com