A group splashes around in the water.
the group are women
The group doesn't have to be women.
exists e1 p1 x1 x2.(n_water(x2) & in(e1,x2) & exists s1.(Theme(s1,x1) & a_around(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_splash(e1) & n_group(x1))
exists p1 x1.(n_group(x1) & exists x2.((x1 = x2) & n_woman(x2)))