Three athletes compete on 3 wheeled conveyances.
Three people are athletes.
Athletes are people who compete.
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 p1 x1.(exists x2.((x1 = x2) & n_athlete(x2)) & n_people(x1) & card_eq_3(x1))