About: http://webisa.webdatacommons.org/142857635

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	Although copper is generally used as the conductive metal in PCBs, those skilled in the art will recognize that other metals such as nickel, gold, palladium, silver and the like can also be used as conductive layers on PCBs.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es