A lady is sitting on a bench wearing sunglasses and holding a walking cane.
The lady's sunglasses are black.
A lady's sunglasses do not have to be black.
exists e1 e3 e2 x1 x2 x3 x4 x5.(for(e1,e3) & Theme(e3,x4) & Actor(e3,x1) & v_hold(e3) & n_cane(x4) & of(x4,x5) & n_walking(x5) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2) & n_sunglass(x3) & on(e1,x2) & n_bench(x2) & Actor(e1,x1) & v_sit(e1) & n_lady(x1))
exists s1 x1 x2.(n_sunglass(x2) & of(x2,x1) & n_lady(x1) & Theme(s1,x2) & a_black(s1))