A woman in yellow is standing next to a concrete railing and a high voltage warning sign, behind a flight of stairs.
The woman is by a concrete railing.
"Next to a concrete railing" is a rephrasing of "by a concrete railing"
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(behind(e1,x8) & of(x8,x9) & n_stair(x9) & n_flight(x8) & to(e1,x3) & subset_of(x5,x3) & n_sign(x5) & of(x5,x7) & n_warning(x7) & of(x5,x6) & n_voltage(x6) & a_high(s2) & Theme(s2,x5) & subset_of(x4,x3) & n_railing(x4) & a_concrete(s1) & Theme(s1,x4) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_yellow(x2) & n_woman(x1))
exists p1 x1.(n_woman(x1) & exists s1 x2.(by(x1,x2) & n_railing(x2) & a_concrete(s1) & Theme(s1,x2)))