About: http://webisa.webdatacommons.org/186740933

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	Contaminants such as atmospheric pollution, construction materials, metal oxides or limescale can deposit in the valleys of the glass and bond to its surface.
http://www.w3.org/ns/prov#wasQuotedFrom	bellmirrorandglass.com