About: http://webisa.webdatacommons.org/95167223

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Therefore the suction does not involve discharge of gas at all, and the vacuum cleaners can be used in extremely clean environments, such as a semiconductor device manufacturing factory, a hospital, a sterilized room, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com