PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In use, a slurry of sand and gel or other fracturing material at an elevated pressure is carried into the central wellbore 200 in a tubular.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com.au