PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This article is interesting, but the key is towards the end, where after all the H2 promotion it points out that you have to make Hydrogen from somewhere, and that takes energy to get it from water or other hydrocarbons.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ito.com