An unhappy looking woman is holding a pair of sunglasses and food.
The woman is not empty handed.
A woman could be unhappy looking.  Not empty handed and holding could mean the same thing.
exists e2 e1 s1 x1 x2 x3 x4 x5.(Theme(e2,x2) & Actor(e2,x1) & v_hold(e2) & subset_of(x5,x2) & n_food(x5) & subset_of(x3,x2) & of(x3,x4) & n_sunglass(x4) & n_pair(x3) & n_woman(x1) & Actor(e1,x1) & v_look(e1) & a_unhappy(s1) & Theme(s1,x1))
exists x1.(n_woman(x1) & -exists s1.(r_empty(s1) & Theme(s1,x1) & a_hand(s1)))