PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is well known to use pressure regulators in irrigation systems in order to provide constant, regulated outlet pressure over a wide range of regulator inlet pressures, to thereby insure the supply of water is maintained at a uniform pressure to a sprinkler or other irrigation device.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com