PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In addition, the hydrogen molecule is the smallest in nature, thus making it prone to leaks: hydrogen can in fact escape from tanks and pipes more easily than other fuels.
http://www.w3.org/ns/prov#wasQuotedFrom
  • e-sources.com