Eight men are standing on a stage playing instruments.
A large rock band plays in an arena.
Men playing instruments on a stage is not always a rock band. A stage is not always in an arena.
exists e1 x1 x2 x3 x4.(on(e1,x2) & n_instrument(x2) & of(x2,x4) & n_playing(x4) & of(x2,x3) & n_stage(x3) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & card_eq_8(x1))
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_arena(x3) & Actor(e1,x1) & v_play(e1) & n_band(x1) & of(x1,x2) & n_rock(x2) & a_large(s1) & Theme(s1,x1))