PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Groundwater is often contaminated with gasoline, diesel fuel, and other lighter-than-water compounds or substances, which can form floating layers on the surface of the groundwater if the levels of contamination are high enough.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com