About: http://webisa.webdatacommons.org/441156751

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	Suitable materials for the planar plate are all optically transparent materials, for example glass (quartz), semi-precious stones (sapphire) and diamond.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com