About: http://webisa.webdatacommons.org/36783123

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	Nickel, copper or their alloy is used as the metallic material, and particularly nickel or a nickel alloy such as nickel manganese is preferable from the viewpoint of enhancing the wear resistance of the contact.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com