PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some gases in the atmosphere, such as carbon dioxide, methane, nitrous oxide, and ozone, absorb energy radiating from the sunlight-warmed surface of the Earth.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cityofboston.gov