About: http://webisa.webdatacommons.org/224840443

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 parts are so proportioned that there is a certain ratio between the entering air and the vapor by volume, and preferably the vapor is about 25 per cent of the air.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com