| http://www.w3.org/ns/prov#value | - FIG. 10 is a schematic front view showing a fourth embodiment of an apparatus for operating a water gate in accordance with the present invention, the apparatus including a pin for inhibiting the lowering of a door and an operating rod extension having a hole for accommodating the pin, and also including a by-pass pipe which connects upper and lower air bags to each other and has a flow rate regul
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