The ornamental design for a sole of a shoe, as shown and described.
FIG. 1 is a top and right front perspective view of a sole for a shoe
showing our new design, the broken lines showing a shoe upper are for
illustrative purposes only and form no part of the design;
FIG. 2 is a bottom plan view thereof.
The side opposite those shown in FIG. 1 are substantially identical thereto
.