A person has rolled a bowling ball.
The person has a bowling ball.
if the person rolled a bowling ball, he has a bowling ball.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_roll(e1) & n_ball(x2) & of(x2,x3) & n_bowling(x3) & n_person(x1))
exists e1 x1 x2 x3.(n_person(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_ball(x2) & of(x2,x3) & n_bowling(x3))