| http://www.w3.org/ns/prov#value | - A body support device comprising,a balloon-like support member having a gas inlet and having an upper wall having a plurality of gas outlets in fluid communication with said gas inlet, a plurality of valves, each coupled to said upper wall of said support member at a hinged region, each valve including a seal resiliently biased into a closed position in flow-obstruction relation with one of said g
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