A woman in a black dress is sitting on stairs.
A female is not standing up.
woman is sitting on stairs is same as she is not standing up
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_stair(x3) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_dress(x2) & a_black(s1) & Theme(s1,x2) & n_woman(x1))
exists x1.(-exists e1 s1.(a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1)) & n_female(x1))