About: http://webisa.webdatacommons.org/102370239

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	In some models, especially older models, the upright vacuum has a blow-back feature, which permits the air stream entering the vacuum to bypass the vacuum bag.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es