About: http://webisa.webdatacommons.org/408690848

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	Such compounds include inorganic oxides, such as silica, alumina, ferric oxide, etc. but may also include a variety of minerals containing one or more of silicon, aluminum, calcium, iron, and vanadium.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com