| http://www.w3.org/ns/prov#value | - Still further, it is contemplated that the riser overlay 12 can have any shape other than rectangular, such as triangular or trapezoidal, for conforming to the shape of a particular riser that is to be covered. [0022] As with the stair tread overlays 10, 24, and 26 described above, the riser overlay 10 and a plurality of similar riser overlays 32 and 34 that are intended to cover the risers 16 of
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