| http://www.w3.org/ns/prov#value | - In accordance with an aspect of the present invention, the above and other objects can be accomplished by the provision of a hydraulic power generating system, comprising: a power generator including a looped rail, a plurality of pulleys moving along the looped rail, a coupler to join the plurality of pulleys, a plurality of wings, each being installed to each of the pulleys to move the pulley by
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