PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Electrowinning and Refining. ??? While the process works well for metals with high electro-potential, such as gold, silver, copper, ???
http://www.w3.org/ns/prov#wasQuotedFrom
  • beltconveyers.net