PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Carbon emissions allowance trading markets have developed as part of the international response to concerns over the environmental effects of increasing global greenhouse gas (GHG) emissions, in particular carbon dioxide (CO2).
http://www.w3.org/ns/prov#wasQuotedFrom
  • etf.com