About: http://webisa.webdatacommons.org/58884013

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	Sources of silica can be colloidal, fumed or precipitated silica, silica gel, sodium or potassium silicates, or organic silicon such as tetraethylorthosilicate, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com