A man with glasses playing a silver guitar.
The man sings as he plays guitar.
Just because someone is playing a guitar doesn't mean that he sings.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_guitar(x4) & of(x4,x5) & n_silver(x5) & (x2 = x3) & n_glass(x2) & n_man(x1))
exists e1 p1 x1.(n_male(x1) & n_man(x1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_play(e2) & n_guitar(x2)) & as(e1,p1) & Actor(e1,x1) & v_sing(e1))