| http://www.w3.org/ns/prov#value | - ral views and wherein:FIG. 1 is a longitudinal section of the first preferred embodiment of the present invention;FIG. 2 is a sectional view taken along a line II--II of FIG. 1;FIG. 3 is a longitudinal section of the second preferred embodiment of the present invention;FIG. 4 is a sectional view taken along a line IV--IV of FIG. 3;FIG. 5 is a longitudinal section of a known agitating device; andFI
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