PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It offers a wide range of ancillary well-site services including engineering, transportation and disposal, construction, well logging, maintenance and other support services.
http://www.w3.org/ns/prov#wasQuotedFrom
  • docstoc.com