A woman with red shoes is standing in the middle of the street.
A woman is obstructing traffic.
There may not be traffic in the street.  She may be interacting with any traffic in a way that is not obstructing.
exists e1 s1 x1 x2 x3 x4.(n_street(x4) & n_middle(x3) & in(e1,x3) & of(x3,x4) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_shoe(x2) & a_red(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_obstruct(e1) & n_traffic(x2) & n_woman(x1))