Two puppies play in the grass
Two puppies are biting each other.
Two puppies can play without biting each other.
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_puppy(x1) & card_eq_2(x1))
exists x1.(all x2.(n_other(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_bite(e1))) & n_puppy(x1) & card_eq_2(x1))