A greyhound racing.
There is a greyhound winning a race.
Racing doesn't always mean winning.
exists s1 x1.(a_topic(x1) & n_racing(x1) & a_greyhound(s1) & Theme(s1,x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_win(e1) & n_race(x4) & (x2 = x3) & n_greyhound(x2))