PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • 28th September 2011 Tyndall Time It is 150 years since John Tyndall's ground-breaking discovery that trace gases such as water vapour and carbon dioxide are responsible for the global greenhouse effect.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ghgonline.org