About: http://webisa.webdatacommons.org/441572976

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	As such, the term ???gas??? may refer to hydrogen, helium, nitrogen, oxygen, or any other gas or a combination of gases, including air, for example.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com