PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Lower purity scrap is usually refined to attain the desired purity level by an electroplating process in which the copper scrap is dissolved into a bath of sulfuric acid and then electroplated out of the solution.Water is a ubiquitous chemical substance that is composed of hydrogen and oxygen and is essential for all known forms of life.
http://www.w3.org/ns/prov#wasQuotedFrom
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