PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A large fraction of this thermal radiation is absorbed by greenhouse gases, such as carbon dioxide or methane, in the atmosphere which re-emit some of the heat back to Earth ??? a process known as the 'greenhouse effect'.
http://www.w3.org/ns/prov#wasQuotedFrom
  • europa.eu