A young boy playing the piano.
A young boy plays the piano
" A young boy playing the piano" is rephrased as "A young boy plays the piano"
exists e1 s1 x1 x2 x3.(n_piano(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_piano(x2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))