About: http://webisa.webdatacommons.org/342956210

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	Although it is generally not necessary to install special-purpose air purifiers for the OA System, cutting down or eliminating such contaminants as smoke and dust can only help the OA System and its media.
http://www.w3.org/ns/prov#wasQuotedFrom	iwar.org.uk