Bicycle riders vie for position.
Cyclists are racing each other.
Bicycle riders are cyclists, and they vie for position by racing each other.
exists e1 x1 x2 x3.(for(e1,x3) & n_position(x3) & Actor(e1,x1) & v_vie(e1) & n_rider(x1) & (x1 = x2) & ne_nam_bicycle(x2))
exists x1.(all x2.(n_other(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_race(e1))) & n_cyclist(x1))