PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ultrafiltration is a membrane separation process which removes particles such as fine silt and bacteria and large organic molecules such as oil and hydrocarbons from water.
http://www.w3.org/ns/prov#wasQuotedFrom
  • environmental-expert.com