About: http://webisa.webdatacommons.org/52373933

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 light-guiding tube 8 is formed of a metal pipe such as copper, brass, stainless steel, or etc., and an inner surface of the light-guiding tube 8 is plated with gold (Au) like a mirror surface for the purpose of enhancing reflectance.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com