A band performs on a stage.
A band take a break in the green room.
either a band performs or take a break and are on a stage or in the green room
exists e1 x1 x2.(on(e1,x2) & n_stage(x2) & Actor(e1,x1) & v_perform(e1) & n_band(x1))
exists e1 s1 x1 x2 x3.(n_room(x3) & a_green(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & in(x2,x3) & n_break(x2) & n_band(x1))