Two men sitting on a flight of stairs next to the number five.
Two men are sitting on a flight of stairs.
When two men sitting on a flight of stairs, the're on the stairs.
exists e1 x1 x2 x3 x4 x5 x6.(n_number(x6) & card_eq_5(x6) & a_topic(x1) & on(e1,x3) & to(x5,x6) & next(x3,x5) & n_thing(x5) & of(x3,x4) & n_stair(x4) & n_flight(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(on(e1,x2) & of(x2,x3) & n_stair(x3) & n_flight(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))