Three dogs on a sidewalk.
The dogs are related.
Not all dogs in close proximity are related.
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_sidewalk(x2) & n_dog(x1) & card_eq_3(x1))
exists e1 x1.(n_dog(x1) & Theme(e1,x1) & v_relate(e1))