These men are performing in a rock band.
Men standing on a stage
Men are performing in a rock band on stage.
exists e1 x1 x2 x3.(n_man(x1) & in(e1,x2) & n_band(x2) & of(x2,x3) & n_rock(x3) & Actor(e1,x1) & v_perform(e1))
exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_stage(x3) & n_standing(x1) & of(x1,x2) & n_man(x2))