About: http://webisa.webdatacommons.org/40147082

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	For extremely hard metals such as tungsten carbide, the A scale is used.
http://www.w3.org/ns/prov#wasQuotedFrom	acehardware.com