PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As one major environmental concern ??? climate change ??? is increasingly understood, governors, state legislatures, and the federal government are exploring ways to reduce emissions of greenhouse gases, particularly carbon dioxide (CO2).
http://www.w3.org/ns/prov#wasQuotedFrom
  • dot.gov