A greyhound wearing a yellow jacket runs a race.
The dog is competing in a big race
Just because the dog is running in a race does not mean that it is a big race.
exists e2 e1 s1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_run(e2) & n_race(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jacket(x3) & a_yellow(s1) & Theme(s1,x3) & (x1 = x2) & n_greyhound(x1))
exists e1 s1 x1 x2.(n_dog(x1) & in(e1,x2) & n_race(x2) & a_big(s1) & Theme(s1,x2) & Actor(e1,x1) & v_compete(e1))