| http://www.w3.org/ns/prov#value | - Examples of the filler include silicates,such as silica, quartz powder, glass beads, glass powder, calcium silicate, aluminum silicate, kaolin, talc, clay, diatomaceous earth and wollastonite, metal oxides, such as iron oxide, titanium oxide, zinc oxide and alumina, metal carbonates, such ascalcium carbonate and magnesium carbonate, metal sulfates, such as calcium sulfate and barium sulfate, silic
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