A girl is diving into a pool and is surrounded by bubbles.
A girl floats on her back in the pool
If the girl is floating on her back, she is already in the pool and cannot be diving into it.
exists e1 e2 x1 x2 x3 x4.(Actor(e2,x4) & n_bubble(x4) & Theme(e2,x3) & v_surround(e2) & n_girl(x3) & into(e1,x2) & n_pool(x2) & Actor(e1,x1) & v_dive(e1) & n_girl(x1))
exists e1 x1 x2 x3.(n_pool(x3) & in(e1,x3) & on(e1,x2) & n_back(x2) & of(x2,x1) & n_female(x1) & Actor(e1,x1) & v_float(e1) & n_girl(x1))