PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • At the returns tank, the fluid passes over a weir and filter system to remove cuttings and other debris before being pumped back to the holding tank.
http://www.w3.org/ns/prov#wasQuotedFrom
  • drillingcontractor.org