Band performing at a show.
A band plays on stage.
performing implies plays
exists e1 x1 x2.(ne_nam_band(x1) & at(e1,x2) & n_show(x2) & Actor(e1,x1) & v_perform(e1))
exists e1 x1 x2.(on(e1,x2) & n_stage(x2) & Actor(e1,x1) & v_play(e1) & n_band(x1))