A young man playing the xylophone.
man practices for concert
Just because a man is playing the xylophone does not mean that he practices for a concert.
exists e1 s1 x1 x2 x3.(n_xylophone(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists x1 x2 x3.(a_topic(x1) & for(x1,x3) & n_concert(x3) & n_practice(x1) & of(x1,x2) & n_man(x2))