Sofa

FIG. 1 is a perspective view of a sofa according to the design.

FIG. 2 is a front view of the sofa of FIG. 1 .

FIG. 3 is a rear view of the sofa of FIG. 1 .

FIG. 4 is a first side view of the sofa of FIG. 1 .

FIG. 5 is a second side view of the sofa of FIG. 1 ; and,

FIG. 6 is a top view of the sofa of FIG. 1 .

Portions of the sofa shown in broken lines are for illustrative purposes only and form no part of the claimed design.