PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It went on to assert that ???most of the greenhouse effect is natural and is due to water vapor naturally in the atmosphere, as well as natural levels of carbon dioxide (CO2), methane, and a few other greenhouse gases.??? The report was written by Joel Schwartz, who at the time was a visiting scholar at the Koch-funded American Enterprise Institute.
http://www.w3.org/ns/prov#wasQuotedFrom
  • grist.org