About: http://webisa.webdatacommons.org/104545292

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	Materials of the reflecting layer include those having a sufficiently high reflection coefficient of the wavelength of reproduced light, for example, elements such as Au, Ag, Cu, Al, Ni, Pd, Cr and Pt were used solely or as an alloy.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr