The ornamental design for a seat, as shown and described.
The FIGURE is a perspective view of the design of the instant invention
embodied in a sofa.
The side of the sofa not shown is the same as the side shown, while the
back of the sofa may be plain and unornamented.
Although I have shown the design of the instant invention embodied in a
sofa, it will be appreciated that, as is well known in the art, the design
is embodied in a chair or loveseat.