About: http://webisa.webdatacommons.org/372189489

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	Gases which are difiicult to liquefy, such as oxygen, nitrogen, etc., when cooled by means of the expansion of gases which are easier to liquefy, such, for example, as ammonia, carbonic acid (G0,), etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com