PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • While it is not desired that my invention be dependent upon the correctness of any explanation for its effectiveness, it is believed upon substantial evidence that the effectiveness of the method, compared to the usual reactivation method, is due to the following: All gasoline fractions derived from petroleum contain at least traces of materials such as sulfur compounds and other impurities.
http://www.w3.org/ns/prov#wasQuotedFrom
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