An elderly man sits on a stool robed in off-white
A man is driving a car.
A man cannot be  driving a car and sits on a stool  simultaneously.
exists e2 e1 s1 x1 x2 x3 x4.(on(e1,x2) & in(e2,x4) & n_off-white(x4) & Theme(e2,x3) & v_robe(e2) & (x2 = x3) & n_stool(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_car(x2) & n_man(x1))