PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The parameters specified for particular ad listings may, for example, include one or more keywords, keyword phrases, topics, URLs, and/or other types of elements used to match ads to web pages.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com