A band performs in front of a graffiti wall.
A groups is playing music outside.
Playing music signify one performs.
exists e1 x1 x2 x3 x4.(in(e1,x2) & of(x2,x3) & n_wall(x3) & of(x3,x4) & n_graffitus(x4) & n_front(x2) & Actor(e1,x1) & v_perform(e1) & n_band(x1))
exists e1 s1 x1 x2.(a_outside(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_music(x2) & n_group(x1))