About: http://webisa.webdatacommons.org/131091179

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	Inert gases such as nitrogen, carbon dioxide or argon are used to bring down the oxygen concentration into a range between 5 ppm to 1%, preferably into a range between 10 to 100 ppm.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com