About: http://webisa.webdatacommons.org/73614878

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	silicon dioxide are examples of materials that provide such a color contrast.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com