A woman is taking a photo of a couple and their child.
A sad woman is taking a photo of a couple and their child.
A women taking a photo need not be sad  which is not implied.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & of(x2,x3) & subset_of(x5,x3) & n_child(x5) & of(x5,x1) & n_thing(x1) & subset_of(x4,x3) & n_couple(x4) & n_photo(x2) & n_woman(x1))
exists e1 s1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & of(x2,x3) & subset_of(x5,x3) & n_child(x5) & of(x5,x1) & n_thing(x1) & subset_of(x4,x3) & n_couple(x4) & n_photo(x2) & n_woman(x1) & a_sad(s1) & Theme(s1,x1))