PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This problem is especially pronounced in areas where oil-bearing formations lie in close vertical proximity to electrically-conductive aquifers.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com