About: http://webisa.webdatacommons.org/422012365

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 the other hand in the aforementioned oxide system, gases such as air, carbon dioxide, oxygen, carbon monoxide and nitrogen may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com