A group of men are performing on stage.
Some people are on a performance stage.
Some people are A group of men
exists e1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & Actor(e1,x1) & v_perform(e1) & of(x1,x2) & n_man(x2) & n_group(x1))
exists p1 x1.(exists x2 x3.(on(x1,x2) & n_stage(x2) & of(x2,x3) & n_performance(x3)) & n_people(x1))