The number 2 dog in the blue vest is in the lead at the dog races.
The dogs are sitting on a couch.
The dogs in a dog race cannot be the same on a couch.
exists p1 s1 x1 x2 x3 x4 x5.(n_race(x5) & of(x5,x1) & n_dog(x1) & n_dog(x1) & n_lead(x4) & n_vest(x3) & a_blue(s1) & Theme(s1,x3) & n_date(x1) & a_date_day_02(x1) & a_date_day_02(x1) & of(x1,x2) & n_number(x2) & in(x1,x4) & at(x4,x5) & in(x1,x3))
exists e1 x1 x2.(n_dog(x1) & on(e1,x2) & n_couch(x2) & Actor(e1,x1) & v_sit(e1))