Two puppies play in the grass
Two puppies are in the grass.
play in the grass shows that puppies need to be in grass
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_puppy(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_grass(x2) & in(x1,x2) & n_puppy(x1) & card_eq_2(x1))