About: http://webisa.webdatacommons.org/120763287

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 a preferred embodiment, the shield is made of quartz or other material having similar electrical properties such as the glass used to produce windows.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au