About: http://webisa.webdatacommons.org/135478709

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 working surfaces of the shells may be impregnated with a polymer or with a metal such as nickel by electroplating or electroless plating.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com