PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Carbon dioxide is not toxic or radioactive, said Ben Grumbles, EPA assistant administrator, but large quantities of injected carbon stored in wells under high pressure could cause the gas to migrate into underground water sources, possibly contaminating them with harmful pollutants, such as aresenic and lead.
http://www.w3.org/ns/prov#wasQuotedFrom
  • waterwebster.com