| http://www.w3.org/ns/prov#value | - e, polyester, perfluorocarbon; inorganic compounds such as silica, glass, kieselguhr, zirconia, alumina, iron oxide or other metal oxides; or co-polymers consisting of any combination of two, or more of a naturally occurring polymer (e.g., polysaccharide or protein), synthetic polymer or inorganic compounds.
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