A girl slides on a red slide
The girl is on a blue slide.
Red is not blue.
exists e1 s1 x1 x2.(on(e1,x2) & n_slide(x2) & a_red(s1) & Theme(s1,x2) & Actor(e1,x1) & v_slide(e1) & n_girl(x1))
exists p1 x1.(n_girl(x1) & exists s1 x2.(on(x1,x2) & n_slide(x2) & a_blue(s1) & Theme(s1,x2)))