About: http://webisa.webdatacommons.org/421485561

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	It should be noted here that such a ceiling could be made from dielectric materials other than quartz, such as aluminum oxide.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com