PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • But over that time, the price of carbon falls dramatically, a collapse blamed on the initial cap being larger than emissions levels at the time. 2007: The U.N. Intergovernmental Panel on Climate Change definitively blames rising global temperatures on human activity and explores ways to tackle the problem, including cap and trade.
http://www.w3.org/ns/prov#wasQuotedFrom
  • foreignpolicy.com