PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • On almost any metric???quality of living, lifespan, health, education, income, basic needs such as food, clothing and shelter???life around the world is improving.
http://www.w3.org/ns/prov#wasQuotedFrom
  • theatlantic.com