PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Heavy metals such as lead, mercury, arsenic, and cadmium are metals and metal compounds that are toxic to people's health.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nj.gov