A kid sitting on a soccer ball at the park.
A child is sitting down at a park.
Sitting on a soccer ball would be sitting down.
exists e1 x1 x2 x3 x4 x5.(n_park(x5) & a_topic(x1) & at(e1,x5) & on(e1,x3) & n_ball(x3) & of(x3,x4) & n_soccer(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_kid(x1))
exists e1 s1 x1 x2.(at(e1,x2) & n_park(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_child(x1))