A woman walks by a mural.
there is a female in this picture
The fact that the mural exists is logically mentioned before the mural is described.
exists e1 x1 x2.(by(e1,x2) & n_mural(x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))
exists p1 x1 x3.(n_picture(x3) & exists x2.((x1 = x2) & in(x2,x3) & n_female(x2)))