PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • With more than 40 hours of labor contained in each gallon, oil is the closest thing to free energy that humanity has ever discovered. [1] A substance that should be used sparingly so that many future generations could use if for medical and other essential products, oil is being squandered at an exponential rate by a corporate culture determined that its descendants will despise it.
http://www.w3.org/ns/prov#wasQuotedFrom
  • zcomm.org