About: http://webisa.webdatacommons.org/175458229

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	Pigments such as carbon black can be added to regulate the amount and kind of light passing through the film.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com