| http://www.w3.org/ns/prov#value | - BRIEF DESCRIPTION OF THE DRAWINGS [0098]FIG. 1 is a front view schematically showing a first example according to the present invention. [0099]FIG. 2 is a sectional view taken along the V3-V3 line of FIG. 1. [0100]FIG. 3 is a sectional view taken along the V4-V4 line of FIG. 1. [0101]FIG. 4 is a sectional view taken along the W3-W3 line of FIG. 1. [0102]FIG. 5 is a sectional view taken along the W
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