About: http://webisa.webdatacommons.org/220739346

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	For this purpose, elements such as Cu, Ag, and Au are suitable, and at the present state of the art, Cu is most desirable.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com