A man is playing his guitar on stage.
A man plays music.
The man plays music which can be done on stage.
exists e1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & of(x2,x1) & n_male(x1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_music(x2) & n_man(x1))