| http://www.w3.org/ns/prov#value | - FIGS. 7A to 7C are diagrams showing the construction of an assembly of the second connecting portion 2 and the shutter member 7, where FIG. 7A is a side view, FIG. 7B is a plan view, and FIG. 7C is a cross-sectional view taken along a line VII???VII shown in FIG. 7B. In FIGS. 7A and 7B, the shutter member 7 is indicated by a two-dot and dash line.
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