| http://www.w3.org/ns/prov#value | - Exemplary substrates include fibre base materials such as paper,polyethylene-coated paper, polypropylene-coated paper, parchment, cloth and the like; sheets and foils of such metals as aluminium, copper, magnesium and zinc; glass and glass coated with such metals as chromium, chromium alloys, steel, silver, gold andplatinum; synthetic polymeric materials such as poly(alkyl methacrylates), e.g. pol
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