PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cleaner energy sources ??? renewable energy, especially wind and solar, as well as the least carbon-intensive fossil fuel, natural gas ??? are increasing their penetration This plan would change the psychology of climate change from one of burden to opportunity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • yale.edu