The young runners are racing through the snow.
People sitting in the snow.
People can not racing and sitting at the same time.
exists e1 s1 x1 x2.(n_snow(x2) & n_runner(x1) & a_young(s1) & Theme(s1,x1) & through(e1,x2) & Actor(e1,x1) & v_race(e1))
exists e1 x1 x2 x3.(n_snow(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))