Two dogs play in a river, one is making a splash.
The animals are in the water.
Dogs can be more generally referred to as animals. The fact that they are in a river can be more generally stated as in the water.
exists e2 e1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_make(e2) & n_splash(x4) & n_thing(x3) & card_eq_1(x3) & in(e1,x2) & n_river(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_water(x2) & n_animal(x1) & in(x1,x2))