About: http://webisa.webdatacommons.org/168765401

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	His son gold-leafed the Statehouse in Boston, so it would not surprise me if the mirror itself were silver-leafed, insofar as the apple does not fall far from the tree.The grinding of the mirror, and other optics, is beyond my ken.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com