PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • According to the Environmental Protection Agency, mercury is a toxic substance that poses a threat to the health of humans, as well as to the environment.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bayhealth.org