About: http://webisa.webdatacommons.org/168591446

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	ilicon dioxide, cadmium sulfide, cadmium selenide, lead chromate, zinc chromate, nickel titanate, clays such as kaolin clay, muscovite and sericite.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com