A girl slides down a purple slide.
The slide ends in a pool.
Sliding down a purple slide does not always end in a pool.
exists e1 s1 s2 x1 x2.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_slide(e1) & n_slide(x2) & a_purple(s1) & Theme(s1,x2) & n_girl(x1))
exists e1 x1 x2.(n_slide(x1) & in(e1,x2) & n_pool(x2) & Actor(e1,x1) & v_end(e1))