PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Frequent interruption of power supply was a problem until the mid 1990s; however the situation has since improved immensely with seldom power cuts occurring presently.
http://www.w3.org/ns/prov#wasQuotedFrom
  • newworldencyclopedia.org