A young girl walks on a railing in front of the beach.
The young girl is outside.
The beach is outside.  If the girl is on the beach, she is outside.
exists e1 s1 x1 x2 x3 x4.(n_beach(x4) & on(e1,x2) & in(x2,x3) & of(x3,x4) & n_front(x3) & n_railing(x2) & Actor(e1,x1) & v_walk(e1) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists s1 s2 x1.(n_girl(x1) & a_young(s1) & Theme(s1,x1) & Theme(s2,x1) & a_outside(s2))