PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The present invention is a system for and method of providing an autonomously mobile air purifier and surface cleaner in combination with a source of air fragrance in a single device for home or office use.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com