Two guys breakdance on stage.
The two men are breakdancing on the stage.
Two guys in rephrasing of the two men.
exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_stage(x3) & n_breakdance(x1) & of(x1,x2) & n_guy(x2) & card_eq_2(x1))
exists e1 x1 x2.(n_stage(x2) & n_man(x1) & card_eq_2(x1) & on(e1,x2) & Actor(e1,x1) & v_breakdance(e1))