PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Gases, such as oxygen and carbon dioxide, and hydrogen ions (often represented by pH) are very suitable to be analyzed or monitored by the present system, particularly when the aqueous medium is blood.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com