A man is sitting on the low stool and polishing shoes.
steel workers picketing in the hot sun
A steel worker is not a man who polishes shoes.
exists e1 e2 s1 x1 x2 x3 x4.(n_stool(x2) & a_low(s1) & Theme(s1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_polish(e2) & n_shoe(x4) & n_man(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 s1 x1 x2 x3.(n_sun(x3) & a_hot(s1) & Theme(s1,x3) & in(e1,x3) & Actor(e1,x1) & v_picket(e1) & n_worker(x1) & of(x1,x2) & n_steel(x2))