A girl wearing a multicolored backpack.
girl with bag
A girl wearing a multicolored backpack is not necessarily a girl with bag.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_backpack(x3) & a_multicolored(s1) & Theme(s1,x3) & (x1 = x2) & n_girl(x1))
exists x1 x2.(a_topic(x1) & with(x1,x2) & n_bag(x2) & n_girl(x1))