About: http://webisa.webdatacommons.org/383616809

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 technique of forming an SiO protective film on a mirror surface formed from a metal, such as Al or the like, has been known.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com