| http://www.w3.org/ns/prov#value | - oof bag surrounding said aperture and extending downwardly therefrom, said bag including a portion which extends upwardly through said aperture and over said top panel, and elastic means adjacent the mouth of said bag for normally constricting said mouth, whereby the mouth of said bag is received over the edge of said top panel and said elastic means being sized to constrict said mouth so that sai
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