Two dogs are running together through the grass.
The grass is being trambled on by two dogs.
through the grass  implies grass is being trambled
exists e1 p1 x1 x2.(n_grass(x2) & through(e1,x2) & exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_grass(x1) & Actor(e1,x2) & n_dog(x2) & card_eq_2(x2) & on(e1,x1) & v_tramble(e1))