About: http://webisa.webdatacommons.org/390169506

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	sources, especially cassiterite, the ore from which tin is made, as well as gold, diamonds and coltan, an essential mobile-phone component. ...
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com