PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Graham: Now, in this coal gasification process, is it any easier to pull put polluting chemicals such as sulfur and mercury, or reduce or eliminate greenhouse gases?
http://www.w3.org/ns/prov#wasQuotedFrom
  • michiganradio.org