PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Prior to the Industrial Revolution, atmospheric concentrations of naturally occurring greenhouse gases, including water vapor or moisture, carbon dioxide, methane, nitrous oxide, and ozone, had been relatively stable for 10,000 years.
http://www.w3.org/ns/prov#wasQuotedFrom
  • terrain.org