PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Another more extreme idea is chemical looping, which involves taking oxygen to the fuel not as a gas, but bound to a metal such as iron or calcium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • theengineer.co.uk