PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Even if the production cost of hydrogen were to drop to economically competitive levels the abysmal storage and transportation problems of hydrogen make it likely that it would be converted to a liquid fuel such as methanol.
http://www.w3.org/ns/prov#wasQuotedFrom
  • dailytech.com