About: http://webisa.webdatacommons.org/280332310

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	Ceramic materials such as refractory carbides and nitrides have been used for many years in such applications as abrasives and in the manufacture of tools.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com