About: http://webisa.webdatacommons.org/12107894

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	In some embodiments, the inert gas may be denser than atmospheric gases such as nitrogen, oxygen, carbon dioxide, or water vapor.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com