A jockey racing a horse down a dirt track.
People are betting on a horse race.
Racing on horse cannot be taken as betting on race
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_race(e1) & down(x3,x4) & n_track(x4) & of(x4,x5) & n_dirt(x5) & n_horse(x3) & (x1 = x2) & n_jockey(x1))
exists e1 x1 x2 x3.(on(e1,x2) & n_race(x2) & of(x2,x3) & n_horse(x3) & Actor(e1,x1) & v_bet(e1) & n_people(x1))