About: http://webisa.webdatacommons.org/390206049

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	Oxygen is removed from the system either by purging with an inert gas such as nitrogen or carbon dioxide, by applying a vacuum or by boiling the mixture.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es