The ornamental design for a belt, as shown and described.
FIG. 1 is a top, front perspective view of a belt showing our new design;
FIG. 2 is a top, front perspective view thereof, with portions of the belt not included in the claim broken away for ease of illustration;
FIG. 3 is a bottom, front perspective view thereof;
FIG. 4 is a front elevation view thereof; and,
FIG. 5 is a rear elevation view thereof.
The evenly spaced broken lines in FIG. 1 depict portions of the belt that form no part of the claimed design. The dash-dot-dot-dash lines in FIGS. 1-5 represent a boundary to the claimed portion of the design and form no part of the claimed design. The different shading techniques in FIGS. 1-5 depict a contrast in appearance only.