PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Google Trends, Yahoo Buzz, and other tools are great.Must understand if search is always a meaningful platform.
http://www.w3.org/ns/prov#wasQuotedFrom
  • seroundtable.com