A man wearing a hat and glasses is playing an electric guitar.
The guitar playing is good.
not all electric guitars are needed to play good
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x1) & v_play(e2) & n_guitar(x6) & a_electric(s1) & Theme(s1,x6) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & subset_of(x5,x3) & n_glass(x5) & subset_of(x4,x3) & n_hat(x4) & (x1 = x2) & n_man(x1))
exists s1 x1 x2.(n_playing(x1) & of(x1,x2) & n_guitar(x2) & Theme(s1,x1) & a_good(s1))