About: http://webisa.webdatacommons.org/56953427

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	Clean air is a delicate balance of nitrogen and oxygen, with small amounts of argon, carbon dioxide, neon, helium, and other gases.
http://www.w3.org/ns/prov#wasQuotedFrom	nrdc.org