PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • About 40 per cent of the heavy metals, including lead, mercury and cadmium, in landfills [...]
http://www.w3.org/ns/prov#wasQuotedFrom
  • hazards.org