A man wearing a black jacket is playing guitar.
A man is playing guitar on a street corner for passerbyes.
Just because a man wearing a black jacket is playing guitar does not indicate that he is playing guitar on a street corner for passerbyes.
exists e1 e2 s1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & n_guitar(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jacket(x3) & a_black(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(on(e1,x3) & for(x3,x5) & n_passerbye(x5) & n_corner(x3) & of(x3,x4) & n_street(x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1))