About: http://webisa.webdatacommons.org/284075122

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	A. The problem you are observing occurs when gold is plated on a base metal such as copper, zinc or silver.
http://www.w3.org/ns/prov#wasQuotedFrom	mmsonline.com