| http://www.w3.org/ns/prov#value | - nes or polypropylenes, polystyrenes, polyurethanes, polyvinyl chlorides, polyvinylpyrrolidones, silicone elastomers, fluoropolymers, polyacrylates, polyisoprenes, polytetrafluoroethylenes, and rubber; minerals or ceramics such as hydroxapatite; human or animal protein or tissue such as bone, skin, teeth, collagen, laminin, elastin or fibrin; organic materials such as wood, cellulose, or compressed
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