About: http://webisa.webdatacommons.org/133036837

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	However, other mineral filler, such as alumina, silicon nitride, or crystalline silica, can be added as additive.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com