About: http://webisa.webdatacommons.org/273717974

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	Using chemicals and some primitive techniques, the silver, tin and other metals were separated for collection.Previously only silver was mined, but now, all minerals where mined.
http://www.w3.org/ns/prov#wasQuotedFrom	travelpod.com