About: http://webisa.webdatacommons.org/52020207

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	The impurities, including lead, copper, tin, and other unwanted metals, are oxidized and partly vaporized and partly absorbed into the pores of the cupel.
http://www.w3.org/ns/prov#wasQuotedFrom	archaeologywordsmith.com