About: http://webisa.webdatacommons.org/91148226

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	Known shielded enclosures include a single or double layer of electrically conductive shielding material such as copper or steel sheet, foil or grid entirely enclosing a shielded space.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com