About: http://webisa.webdatacommons.org/283311682

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 TiO2 layer 202 and SiO2 layer 204 isolate and passivate the Ag metal layer and avoid oxidation, corrosion or other reaction which would otherwise reduce the reflectivity of Ag layer 198.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com