Two men climb a set of stairs.
Two men are ascending to the top floor of their office building.
Stairs are not only in office building s
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & of(x2,x3) & n_stair(x3) & n_set(x2) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3 x4.(n_building(x3) & of(x3,x4) & n_office(x4) & of(x3,x2) & n_thing(x2) & n_floor(x2) & a_top(s1) & Theme(s1,x2) & to(e1,x2) & of(x2,x3) & Actor(e1,x1) & v_ascend(e1) & n_man(x1) & card_eq_2(x1))