PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This approach is already used in Brazil, the USA and the EU, among other regions, where ethanol biofuels are being made from sugar cane, grain and other crops.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bio-medicine.org