| http://www.w3.org/ns/prov#value | - A multi-stage evaporative cooling system for providing cool air to a structure, comprising: an outer cooling unit and an inner cooling unit, each unit including a shell and a plurality of removable panels, forming a vapor space in between the outer cooling unit and the inner cooling unit; a water source; and a water supply system connected to the water source, including a water pump, a plurality o
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