Man playing guitar in a public place.
A man is performing music.
Playing guitar is a form of performing music.
exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x4) & n_place(x4) & a_public(s1) & Theme(s1,x4) & n_guitar(x1) & of(x1,x3) & n_playing(x3) & of(x1,x2) & n_man(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_music(x2) & n_man(x1))