Six ballet dancers, three men and three women, perform on stage.
Six person dansing on a stage.
Ballet dancers are people, and dancing is a form of perform.
exists e1 x1 x2 x3 x4 x5 x6 x7.(on(e1,x7) & n_stage(x7) & Actor(e1,x1) & v_perform(e1) & n_woman(x6) & card_eq_3(x6) & n_man(x5) & subset_of(x6,x3) & subset_of(x5,x3) & card_eq_3(x3) & n_dancer(x2) & of(x2,x4) & n_ballet(x4) & card_eq_6(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_stage(x3) & Actor(e1,x2) & v_danse(e1) & (x1 = x2) & n_person(x1) & card_eq_6(x1))