About: http://webisa.webdatacommons.org/51606908

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	The core member 6 is preferably made of hard material, for example, ceramics such as silicon carbide (SiC), silicon nitride (Si3 N4) including ??-type silicon carbide (??-SiC) or the steel which is used for roller bearings, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com