PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Unfortunately, variability is a fact of life due to check-ring design, wear factors, contamination, lack of maintenance, and the fact that most nonreturn valves have a propensity to leak differently from shot to shot.If you would like to get an idea of how much they leak, do a simple test on any given part.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ptonline.com