About: http://webisa.webdatacommons.org/157478853

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	After passing through the packs, the fresh air is mixed with a part of the surrounding air from the passenger cabin, and impurities such as dust, bacteria and viruses removed using highly effective filters.
http://www.w3.org/ns/prov#wasQuotedFrom	issuu.com