About: http://webisa.webdatacommons.org/6915298

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	s, such as gold, the main tin ore cassiterite, and coltan (columbite-tantalite), which is used to make many electronic devices, including cell phones.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com