About: http://webisa.webdatacommons.org/259702969

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, also known as silica, is a naturally occurring mineral and the second most abundant element in the earth???s crust (after oxygen).
http://www.w3.org/ns/prov#wasQuotedFrom	cascademineralsnw.com