men in suits and ties walking downsteps
The men are walking downstairs.
downsteps is  a synonym of downstairs.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x2) & subset_of(x4,x2) & Theme(e1,x6) & Actor(e1,x5) & v_walk(e1) & n_downstep(x6) & (x4 = x5) & n_tie(x4) & subset_of(x3,x2) & n_suit(x3) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_downstairs(x2))