Sofa

FIG. 1 . is a perspective view of a sofa showing the design;

FIG. 2 . is a second perspective view thereof

FIG. 3 . is a front elevation view thereof;

FIG. 4 . is a rear elevation view thereof;

FIG. 5 . is a left side elevation view thereof;

FIG. 6 . is a right side elevation view thereof;

FIG. 7 . is a top plan view thereof;

FIG. 8 . is a bottom plan view thereof;

FIG. 9 . is a detail view thereof; and,

FIG. 10 . is a third perspective view thereof.

The dot-dash broken lines encircling portions of the sofa in FIG. 1 and illustrated in enlarged views in FIG. 10 form no part of the claimed design.

The small evenly-spaced broken lines depict portions of the sofa that form no part of the claimed design.