PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • But water vapour, carbon dioxide and other gases form a blanket around the Earth, trapping heat ??? a process called the greenhouse effect.
http://www.w3.org/ns/prov#wasQuotedFrom
  • abs.gov.au