About: http://webisa.webdatacommons.org/292034983

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	On earth oxygen occupies approximately 21% of the air in our atmosphere (the other 78% is nitrogen and 1% is argon, carbon dioxide and other gases).
http://www.w3.org/ns/prov#wasQuotedFrom	hengyeusa.com