PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, in countries such as the United States, Canada, Mexico, Australia, Japan and the European Union, unemployment is measured using a sample survey (akin to a Gallup poll).[28] According to the BLS, a number of Eastern European nations have instituted labour force surveys as well.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mashpedia.com