a child doing a jump on a skateboard
The skateboard belonged to the child.
The skateboard may not have belonged to the child.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & on(x3,x4) & n_skateboard(x4) & n_jump(x3) & (x1 = x2) & n_child(x1))
exists e1 x1 x2.(n_child(x2) & n_skateboard(x1) & to(e1,x2) & Actor(e1,x1) & v_belong(e1))