About: http://webisa.webdatacommons.org/345977129

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	It is approximately 4/5ths nitrogen and 1/5th oxygen plus some other gases, notably carbon dioxide at around 1/3rd of 1%.
http://www.w3.org/ns/prov#wasQuotedFrom	southbedsfoe.co.uk