PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Workers can be exposed to cadmium in the air from working with products such as batteries, paints, or welding materials.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cdc.gov