A dog running in the grass.
Outside there is an animal on the move.
makes the first sentence vague turning a dog running into an animal on the move
exists e1 x1 x2 x3.(n_grass(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_dog(x1))
exists p1 x1 x3.(n_move(x3) & r_outside(p1) & exists x2.((x1 = x2) & on(x2,x3) & n_animal(x2)))