About: http://webisa.webdatacommons.org/336805349

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	Particularly preferred oxides are aluminum oxide, magnesium oxide and sheet silicates and especially silicon oxide, in particular in the form of a silica gel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es