A rock band is performing in a concert hall with hexagonal roof panels.
The rock band plays with rocks on stage.
A rock band performing does not mean they are playing with rocks.
exists e1 s1 x1 x2 x3 x4 x5 x6.(in(e1,x3) & with(x3,x5) & n_panel(x5) & of(x5,x6) & n_roof(x6) & a_hexagonal(s1) & Theme(s1,x5) & n_hall(x3) & of(x3,x4) & n_concert(x4) & Actor(e1,x1) & v_perform(e1) & n_band(x1) & of(x1,x2) & n_rock(x2))
exists e1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & with(e1,x2) & n_rock(x2) & n_rock(x2) & Actor(e1,x1) & v_play(e1) & n_band(x1) & of(x1,x2))