| http://www.w3.org/ns/prov#value | - w of a spring element including a superior spring element, an anterior spring element, and an inferior spring element. [0216]FIG. 132 is a bottom plan view of a spring element including a superior spring element, and an inferior spring element having a U-shape. [0217]FIG. 133 is a bottom plan view of a spring element including a superior spring element, and an inferior spring element having a J-sh
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