PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Sometimes chemicals such as sodium nitrate are added to increase oxygen content in the water and provide the bacteria an alternate oxygen source when free oxygen from mechanical sources is not available.
http://www.w3.org/ns/prov#wasQuotedFrom
  • asappumpandliftstation.com