A little girl gets her picture taken while on the merry-go-round.
A girl is on the merry-go-round.
The little girl would need to be on the merry-go-round in order to have her picture while on the merry-go-round.  A little girl is a girl.  A girl having her picture taken on the merry-go-round must be on the merry-go-round.
exists e1 e2 s1 x1 x2 x3 x4.(n_merry-go-round(x4) & Theme(e2,x2) & Actor(e2,x1) & v_get(e2) & on(e1,x4) & r_while(e1) & Theme(e1,x3) & v_take(e1) & (x2 = x3) & n_picture(x2) & of(x2,x1) & n_female(x1) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_merry-go-round(x2) & on(x1,x2) & n_girl(x1))