PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ???The soil in Guiyu has been found to be so saturated with heavy metals such as lead, chromium and tin that groundwater has become undrinkable.???
http://www.w3.org/ns/prov#wasQuotedFrom
  • datahound.co.uk