About: http://webisa.webdatacommons.org/429543074

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 titanium dioxide, barium sulfate, zinc oxide, lead oxide, etc., are desirable, to make the layer opaque, so that it can function as a reflecting layer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr