A young boy is completing a martial arts kick onto a bag.
A young boy is practicing
The boys kicks onto a bag which means he is practicing.
exists e1 e2 s1 s2 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_complete(e2) & onto(e1,x4) & n_bag(x4) & Actor(e1,x3) & v_kick(e1) & (x2 = x3) & n_art(x2) & a_martial(s2) & Theme(s2,x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1.(Actor(e1,x1) & v_practice(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))