PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Two types of methods are known to remove dissolved oxygen in these systems: the methods of mechanically removing oxygen by the use of a deaerator (the heat boiling and evacuation the methods), and methods of chemically reducing dissolved oxygen by the use of a deoxidizing agent, such as hydrazine and sodium sulfite.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com.au