PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some greenhouse gases such as carbon dioxide and water vapor occur naturally and are emitted to the atmosphere through natural processes and human activities.
http://www.w3.org/ns/prov#wasQuotedFrom
  • rubycanyoneng.com