Two dogs play on the grass.
Some puppies are running to catch a ball.
Not all dogs are puppies, not all play is catch a ball.
exists e1 x1 x2.(n_grass(x2) & on(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 p1 x1 x2.(Topic(e1,p1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_catch(e2) & n_ball(x3)) & Actor(e1,x2) & v_run(e1) & n_puppy(x2) & n_puppy(x1))