About: http://webisa.webdatacommons.org/286630293

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	Generally a range of from 10-30% oxygen, 1-10% CO2 and a balance of nitrogen or other relatively inert and non-toxic gas may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com