The ornamental design for a chair, as shown and described.
FIG. 1 is a front view of a chair according to the present invention.
FIG. 2 is a rear view of the chair of FIG. 1.
FIG. 3 is a top view of the chair of FIG. 1.
FIG. 4 is a bottom view of the chair of FIG. 1; and,
FIG. 5 is a left side view of the chair of FIG. 1; the right side view being a mirror image.
The fragmented depictions of the wicker weave pattern are understood to represent a uniform and continuous wicker weave pattern throughout the circumscribed areas. The fragmented depictions of the wicker twisted rope pattern are understood to represent a continuous twisted rope pattern extending along the entire length of the lines that they are shown circumscribed about.