| http://www.w3.org/ns/prov#value | - Provided between core member 122 in document hold-down portion 116, and the lower sheet 126 are a reinforcing plate member 150 made of a metal such as iron, aluminum or the like, a flexible sheet 152 similar to upper or lower sheet 124 or 126 and a resilient spongy sheet member 154 made of polyurethane foam or the like disposed between sheets 126 and 152.
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