PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Mike Fauscette, an analyst at research firm IDC, has an even bolder prediction: In three to five years, he suggests, 10 percent to 15 percent of total consumer spending in developed countries may go through sites such as Facebook.
http://www.w3.org/ns/prov#wasQuotedFrom
  • searchenginewatch.com