PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some low heating value gases may essentially contain only hydrogen and carbon monoxide such as dilute synthesis gas or the product of in situ coal gasification.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es