In the crowd, there is a woman in a red coat at the bottom of the stairs.
A woman in a red coat is at the bottom of the stairs.
there is a woman is a rephrasing of a  women.
exists p1 x1 x2 x5 x6.(n_crowd(x2) & n_stair(x6) & n_bottom(x5) & in(p1,x2) & exists s1 x3 x4.((x1 = x3) & at(x3,x5) & of(x5,x6) & in(x3,x4) & n_coat(x4) & a_red(s1) & Theme(s1,x4) & n_woman(x3)))
exists p1 s1 x1 x2 x3 x4.(n_stair(x4) & n_bottom(x3) & at(x1,x3) & of(x3,x4) & in(x1,x2) & n_coat(x2) & a_red(s1) & Theme(s1,x2) & n_woman(x1))