PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Background Information [0006] Crude oil or petroleum is a complex liquid mixture of hydrocarbons containing primarily carbon, hydrogen, and varying amounts of other atoms such as sulfur, nitrogen, oxygen, and others.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com