PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Natpal is agnostic about where it buys keywords for its clients, targeting such sites as Google, MSN, Yahoo, online yellow page directories and elsewhere.
http://www.w3.org/ns/prov#wasQuotedFrom
  • upenn.edu