Athletes are running in an event.
athletes are outside
If the athletes are running in an event they are outside.
exists e1 x1 x2.(in(e1,x2) & n_event(x2) & Actor(e1,x1) & v_run(e1) & n_athlete(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_athlete(x1))