About: http://webisa.webdatacommons.org/57770494

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	Very hard, so-called "superabrasive substances, such as diamond and cubic boron nitride (CBN), are especially useful for cutting hard or difficult to cut materials.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com