PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • CO2 is a TRACE gas in the earth???s atmosphere comprising about .039% of all atmospheric gasses (thirty-nine thousandths of one percent).
http://www.w3.org/ns/prov#wasQuotedFrom
  • forbes.com