PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • One method includes a reforming process for generating hydrogen, e.g., converting fuel such as natural gas or propane into a hydrogen-rich gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com