Several dogs running a race on a dirt track while wearing numbers.
Cats are running a marathon.
Cats and dogs are two different things. Marathons are usually long distance and not run on a dirt path.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & while(e1,e2) & Theme(e2,x6) & Actor(e2,x2) & v_wear(e2) & n_number(x6) & Theme(e1,x3) & Actor(e1,x2) & v_run(e1) & on(x3,x4) & n_track(x4) & of(x4,x5) & n_dirt(x5) & n_race(x3) & (x1 = x2) & n_dog(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_marathon(x2) & n_cat(x1))