| http://www.w3.org/ns/prov#value | - Specifically, an example of the material is a metal group such as copper, iron or aluminum, or a plastic group such as ethylene-vinylalcohol copolymer, polyacrylonitrile, nylon 6, nylon 66, nylon 12, polybutylene terephthalate, polybutylene naphthalate, polyethylene terephthalate, polyethylene naphthalate, polyvinylidene fluoride, polyvinylidene chloride, ethylene-tetrafluoroethylene copolymer, po
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