About: http://webisa.webdatacommons.org/318820292

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 refractory-type materials include materials such as silica, alumina, and zirconia.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com