PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, in the case of analytical parameters such as pH, oxidation reduction potential (ORP), conductivity, dissolved oxygen, turbidity, corrosion rate, ion specific, etc., conventional systems monitor these parameters with separate discrete instruments.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com