One cyclist takes the lead over the other 3, racing in the velodrome.
Five snowmobilers race.
One can not be a cyclist and snowmobiler at the same time. There are 4 racing in the cycles and 5 on snowmobiles.
exists e2 e1 x1 x2 x3 x4.(n_velodrome(x4) & -(x3 = x3) & n_date(x3) & a_date_day_03(x3) & a_date_day_03(x3) & n_lead(x2) & for(e1,e2) & in(e2,x4) & Actor(e2,x1) & v_race(e2) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & over(x2,x3) & n_cyclist(x1) & card_eq_1(x1))
exists s1 x1 x2.(n_race(x1) & a_.(s1) & Theme(s1,x1) & of(x1,x2) & n_snowmobiler(x2) & card_eq_5(x1) & a_topic(x1))