A young girl exercises on a treadmill.
A young girl is trying to stay in shape.
A girl on a treadmill is not always exercising to stay in shape.
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_treadmill(x3) & n_exercise(x1) & of(x1,x2) & n_girl(x2) & a_young(s1) & Theme(s1,x1))
exists e1 p1 s1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2.(in(e2,x2) & n_shape(x2) & Actor(e2,x1) & v_stay(e2)) & n_girl(x1) & a_young(s1) & Theme(s1,x1))