PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some electronic scrap components, contain contaminants such as lead, cadmium, beryllium, mercury, and brominated flame retardants.
http://www.w3.org/ns/prov#wasQuotedFrom
  • worldwidescience.org