About: http://webisa.webdatacommons.org/362188902

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	The air control valves 93 are connected to a main air flow conduit 94 which leads to a blower or other source for creating positive or negative air pressure.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es