PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some of them have been decommissioned, but the heavy metals are still buried in the ground and pose a potential significant threat to human health and nature, particularly because many of them are situated next to rivers and the pollution can spread quickly.
http://www.w3.org/ns/prov#wasQuotedFrom
  • panda.org