A woman with long blond-hair is sitting on a stool with a piano.
The woman is playing the piano.
Just because a woman is sitting on a stool with a piano it does not mean she is playing the piano.
exists e1 s1 x1 x2 x3 x4.(with(e1,x4) & n_piano(x4) & on(e1,x3) & n_stool(x3) & Actor(e1,x1) & v_sit(e1) & with(x1,x2) & n_blond-hair(x2) & a_long(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1 x2.(n_piano(x2) & n_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))