PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Because coal is the largest single source of greenhouse gas emissions both in the United States and worldwide, and because there is enough coal left in the ground to heat the planet to catastrophic levels, that fossil fuel has been the focus of much new protest.
http://www.w3.org/ns/prov#wasQuotedFrom
  • grist.org