A man wearing glasses plays a guitar behind a music stand.
A woman is playing a guitar.
A person cannot be man and woman simultaneously.
exists e1 e2 x1 x2 x3 x4 x5 x6.(behind(e2,x5) & n_stand(x5) & of(x5,x6) & n_music(x6) & Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & n_guitar(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_glass(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_woman(x1))