About: http://webisa.webdatacommons.org/448745375

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	Silver and silver alloys such as copper/silver, palladium/silver and gold and gold alloys such as gold/germanium and gold/silver platinum/gold alloys may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com