About: http://webisa.webdatacommons.org/343556643

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	material such as alumina, silica, beryllia, magnesia, thoria, zirconia, boronite, silicon carbide, silicone nitride, or the like, for casting steel, cast iron, or an alloy having a high melting point.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com