About: http://webisa.webdatacommons.org/419278691

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	Pure air is composed of many gases including nitrogen, oxygen, carbon dioxide, methane, and water vapor.
http://www.w3.org/ns/prov#wasQuotedFrom	yale.edu