Two cyclists riding in a line while number two is ahead of number three.
Number two is leading the race.
there may be other cyclists and hence it cannot be said the number two is leading the race
exists e1 p1 x1 x2 x3.(a_topic(x1) & exists s1 x4 x5 x6.(of(s1,x6) & n_number(x6) & card_eq_3(x6) & Theme(s1,x4) & a_ahead(s1) & Time(x4,x5) & n_two(x5) & n_number(x4)) & while(e1,p1) & in(e1,x3) & n_line(x3) & Actor(e1,x2) & v_ride(e1) & (x1 = x2) & n_cyclist(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_race(x3) & Theme(e1,x3) & Actor(e1,x1) & v_lead(e1) & n_thing(x1) & card_eq_2(x1) & (x1 = x2) & ne_nam_number(x2))