About: http://webisa.webdatacommons.org/84690205

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 this embodiment, the outer housing 51 is a tubular member enclosed at each end and filled with a fluid such as propylene glycol or a gas, or the gas is removed to create a partial vacuum.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com