A male on Rollerblades skating down a railing next to stairs.
The railing is long
Not all railings are long.
exists e1 s1 x1 x2 x3 x4 x5.(ne_org_rollerblades(x2) & a_topic(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x3) & v_skate(e1) & n_next(x4) & to(x4,x5) & n_stair(x5) & n_rail(x4) & (x1 = x3) & on(x1,x2) & n_male(x1))
exists s1 x1.(n_railing(x1) & Theme(s1,x1) & a_long(s1))