A girl is in a dress.
There is a girl in a yellow dress.
Not every dress is yellow.
exists p1 x1.(exists x2.(in(x1,x2) & n_dress(x2)) & n_girl(x1))
exists p1 x1 s1 x2 x3.((x1 = x2) & in(x2,x3) & n_dress(x3) & a_yellow(s1) & Theme(s1,x3) & n_girl(x2))