| http://www.w3.org/ns/prov#value | - at least one support, said at least one support including at least one face, said at least one face including at least two recesses arranged radially about said face in at least one of the group consisting of a clockwise direction of said face and a counterclockwise direction of said face, each of said at least two recesses being progressively more shallow than a preceding one of said at least two
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