A white-haired woman in cooking vegetables.
The vegetables being cooked are onions and peppers.
Not all vegetables that are cooked are onions and peppers.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_vegetable(x2) & of(x2,x3) & n_cooking(x3) & n_woman(x1) & a_white-haired(s1) & Theme(s1,x1))
exists e1 p1 x1 x2.(n_vegetable(x1) & exists x3 x4 x5.((x1 = x3) & subset_of(x5,x3) & n_pepper(x5) & subset_of(x4,x3) & n_onion(x4)) & Theme(e1,x2) & v_cook(e1) & (x1 = x2))