PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Suitable foaming agents include mineral acids and other pH-induced foaming agents, such as tri-n-butyl phosphate.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com