A spaniel runs through the grass.
The dog is sleeping on the ground.
The dog can't be sleeping while they runs.
exists e1 x1 x2.(n_grass(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_spaniel(x1))
exists e1 x1 x2.(n_ground(x2) & n_dog(x1) & on(e1,x2) & Actor(e1,x1) & v_sleep(e1))