a little girl ends up at the bottom of the slide.
A girl is at the bottom of a slide and a boy is at the top.
Just because a girl is at the bottom doesn't imply that there is a boy at the top.
exists e1 s1 s2 x1 x2 x3.(n_slide(x3) & n_bottom(x2) & at(e1,x2) & of(x2,x3) & a_up(s2) & Manner(e1,s2) & Actor(e1,x1) & v_end(e1) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists p1 p2 x1 x2 x3 x5.(n_top(x5) & n_bottom(x3) & at(x2,x5) & n_boy(x2) & exists x4.(at(x1,x3) & of(x3,x4) & n_slide(x4)) & n_girl(x1))