PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The simplest oxide, silicon dioxide (SiO2) or silica, is a component of many rocks and minerals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • newworldencyclopedia.org