Three dogs are playing in the grass.
There are animals in the grass.
dogs are animals.
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_3(x1))
exists p1 x1 x2.(n_grass(x2) & in(p1,x2) & exists x3.((x1 = x3) & n_animal(x3)))