A young boy throwing a ball.
The young boy has a ball.
If the boy is throwing the ball, he clearly has possession of it.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_throw(e1) & n_ball(x3) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_boy(x1) & a_young(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_ball(x2))