Three athletes compete on 3 wheeled conveyances.
People are racing each other.
Competing does not mean racing necessarily.
exists e1 s1 x1 x2.(on(e1,x2) & n_conveyance(x2) & a_wheeled(s1) & Theme(s1,x2) & n_date(x2) & a_date_day_03(x2) & a_date_day_03(x2) & Actor(e1,x1) & v_compete(e1) & n_athlete(x1) & card_eq_3(x1))
exists x1.(all x2.(n_other(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_race(e1))) & n_people(x1))