The young boys are running in a race.
Young boys are racing.
Racing involves running.
exists e1 s1 x1 x2.(n_boy(x1) & a_young(s1) & Theme(s1,x1) & in(e1,x2) & n_race(x2) & Actor(e1,x1) & v_run(e1))
exists e1 s1 x1.(Actor(e1,x1) & v_race(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))