PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Therefore, an ionizer is an apparatus for supplying a positive ion and a negative ion to the air which serves as a path of electric discharge and for preventing generation of a large electric potential difference between the objects, as electric discharge is increased.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com