A girl running in a race.
A girl is running the Boston Marathon.
Not all races are the Boston Marathon.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_race(x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_girl(x1))
exists e1 x1 x2 x3.(ne_org_marathon(x2) & (x2 = x3) & ne_org_boston(x3) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_girl(x1))