About: http://webisa.webdatacommons.org/395511421

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 surface of the upper chamber is coated with a diffuse reflecting material, such as a gold plating, and the sides of the chamber are coated with a diffuse or a specular reflecting material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr