The ornamental design for furniture, as shown and described.
FIG. 1 is a front elevation view of a rectangular panel containing an ornamental design for furniture;
FIG. 2 is a front elevation view of six rectangular panels in accordance to a second embodiment;
FIG. 3 is a front elevation view of four rectangular panels in accordance to a third embodiment;
FIG. 4 is another front elevation view of four rectangular panels in accordance with a fourth embodiment;
FIG. 5 is a front elevation view of two rectangular panels in accordance to a fifth embodiment;
FIG. 6 is another front elevation view of the two rectangular panels of FIG. 5 shown in a different environment;
FIG. 7 is a front elevation view of six rectangular panels in accordance to a six embodiment; and,
FIG. 8 is a front elevation view of six rectangular panels in accordance to a seventh embodiment.
Subject matter shown in broken lines form no part of the claimed design, and in FIG. 1 broken lines illustrate the boundaries of furniture, and in FIGS. 2-8 broken lines also illustrate example environments in which an article embodying furniture is used.