The young boys are running in a race.
The young boys are running as fast as they can in a race.
They don't have to be fast. They could run slow.
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 e2 e1 s1 s2 x1 x2.(n_thing(x1) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & r_as(e1) & as(e1,e2) & in(e2,x2) & n_race(x2) & Actor(e2,x1) & v_can(e2) & a_fast(s2) & Manner(e1,s2) & Actor(e1,x1) & v_run(e1))