| http://www.w3.org/ns/prov#value | - with the curtain being closed.FIG. 9A is a plan view of a mechanism for supporting the chair pivotably, and FIGS. 9B and 9C are a front view and side elevation, respectively, of the mechanism.FIG. 10 is a side elevation of the chair being lifted up to midway by the pivoting support mechanism.FIG. 11 is a plan view of the chair in an out-of-use position.FIG. 12 is a block diagram of a control circ
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