A man playing guitar with a black jacket
A man playing in a concert
A man can play a guitar without being in a concert.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & with(e1,x4) & n_jacket(x4) & a_black(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_guitar(x3) & (x1 = x2) & n_man(x1))
exists x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_concert(x3) & n_playing(x1) & of(x1,x2) & n_man(x2))