PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Most commercial hydrogen is produced by steam reforming natural gas, not electrolysis.They key to a hydrogen economy (Ugh, buzzword/phrase) is not the production of hydrogen but its storage. 3000 PSI (20.68Mpa) cylinders are not appealing to safety advocates or consumers and other forms of storage have not panned out.
http://www.w3.org/ns/prov#wasQuotedFrom
  • slashdot.org