About: http://webisa.webdatacommons.org/299952231

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 the preferred material for this alternative embodiment of the invention, other metals may also be utilized, including nickel (Ni), gold (Au), lead (Pb) and tin (Sn), as well as combinations thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es