PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As more of this content comes online, industries such as real estate and insurance will get uglier as commercial players are forced out of the SERP and into buying AdWords.
http://www.w3.org/ns/prov#wasQuotedFrom
  • seobook.com