About: http://webisa.webdatacommons.org/85566382

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	This rearmost surface is typically coated with a layer of silver 8, and then protected with a thin film layer of copper 19 which itself is overcoated with a protective material 20, typically a paint such as a lead-based paint.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com