PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Perhaps the simplest way to categorize fossil fuel products is to group them according to phase state, i.e. solid, liquid, or gaseous.
http://www.w3.org/ns/prov#wasQuotedFrom
  • alternatefuelsworld.com