PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Since 2002, research by the Pew Research Center's Internet & American Life Project has found that American adults use online resources, including search engines and social networks, as significant sources of health information.
http://www.w3.org/ns/prov#wasQuotedFrom
  • chcf.org