Five men in tuxedos walk down a set of steps
People in formal clothes are descending.
"Descending" is a synonym of walk down.
exists e1 x1 x2 x3 x4.(down(e1,x3) & of(x3,x4) & n_step(x4) & n_set(x3) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_tuxedo(x2) & n_man(x1) & card_eq_5(x1))
exists e1 s1 x1 x2.(Actor(e1,x1) & v_descend(e1) & in(x1,x2) & n_clothes(x2) & a_formal(s1) & Theme(s1,x2) & n_people(x1))