PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Coal waste ash is the second largest industrial waste stream in the country and contains heavy metals, such as lead, cadmium, chromion, arsenic and mercury, but is not considered a hazardous material.
http://www.w3.org/ns/prov#wasQuotedFrom
  • one-blue-marble.com