About: http://webisa.webdatacommons.org/253904007

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	However, it is not beyond the concepts of the present invention to utilize internal chamber sections 22 made of various other materials such as metals, like steel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com