PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • These pumps work well for delivering large volumes of liquid, principally oil and water, of medium viscosity.Significant amounts of gas present can present problems because a centrifugal pump does not operate efficiently with large amounts of entrained gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com