A woman is swinging on a rope.
A woman is sleeping.
One cannot be swinging on a rope and sleeping simultaneously.
exists e1 x1 x2.(on(e1,x2) & n_rope(x2) & Actor(e1,x1) & v_swing(e1) & n_woman(x1))
exists e1 x1.(Actor(e1,x1) & v_sleep(e1) & n_woman(x1))