PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • An estimated 70 million people in the United States suffer from sleep problems, either because of disorders such as apnea and insomnia or just a lack of time devoted to slumber, the federal government says.
http://www.w3.org/ns/prov#wasQuotedFrom
  • hscareers.com