A group of children are playing in water.
Young boys wrestle in a pool.
We have no idea what they are playing, they could wrestle, or they could play a number of other games.
exists e1 x1 x2 x3.(in(e1,x3) & n_water(x3) & Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_child(x2) & n_group(x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_pool(x2) & Actor(e1,x1) & v_wrestle(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))