| http://www.w3.org/ns/prov#value | - Preferably, either the retaining side is a portion of a retaining nose projecting radially outward and provided on the second circular blank plate and at the same time a portion of a radial nose that projects radially outward and is provided on the retaining means or the retaining side is a portion of a retaining bight that is provided in the second circular blank plate and is a portion of a bight
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