About: http://webisa.webdatacommons.org/180897136

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	The upper and lower zones of the system are enclosed by a dual-walled chamber, wherein the inner wall is a chemically inert plastic and the outer wall is a structural metal.
http://www.w3.org/ns/prov#wasQuotedFrom	faqs.org