A young woman playing the guitar.
Harry Chapin wrote Harry Potter.
Harry Chapin is not a woman.  One cannot be writing and playing at the same time.
exists e1 s1 x1 x2 x3.(n_guitar(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_woman(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(ne_per_potter(x3) & (x3 = x2) & ne_per_harry(x2) & ne_per_harry(x2) & ne_per_chapin(x1) & (x1 = x2) & Theme(e1,x3) & Actor(e1,x1) & v_write(e1))