Two dogs run through the grass.
Two cats are eating melons.
Cats are not dogs.
exists e1 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_melon(x2) & n_cat(x1) & card_eq_2(x1))