PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • here is the numbers:Cryogenically stored liquid hydrogen = 2,600 Wh/lHydrogen gas at around 2,000 psi = 405 Wh/lLiquid gasoline at room temperature = 9,000 Wh/lAny line of reasoning that assumes hydrogen is a power source - rather than just a storage medium with very poor energy density - is unfortunately based on a flawed premise.
http://www.w3.org/ns/prov#wasQuotedFrom
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