About: http://webisa.webdatacommons.org/20018339

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	In south???west England, the granites were principally mined for tin and copper.
http://www.w3.org/ns/prov#wasQuotedFrom	bgs.ac.uk