A black man is sitting on a stool by a teal Garden Shed.
A black man is not sitting
A black man cannot sit and not sit at the same time.
exists e1 s1 s2 x1 x2 x3 x4.(by(e1,x3) & ne_geo_shed(x3) & (x3 = x4) & ne_geo_garden(x4) & a_teal(s2) & Theme(s2,x3) & on(e1,x2) & n_stool(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & a_black(s1) & Theme(s1,x1))
exists s1 x1.(-exists e1.(Actor(e1,x1) & v_sit(e1)) & n_man(x1) & a_black(s1) & Theme(s1,x1))