A woman stands on a sidewalk in front of a picket fence.
A woman is outside.
In front of a picket fence implies outside.
exists e1 x1 x2 x3 x4 x5.(in(e1,x3) & of(x3,x4) & n_fence(x4) & of(x4,x5) & n_picket(x5) & n_front(x3) & on(e1,x2) & n_sidewalk(x2) & Actor(e1,x1) & v_stand(e1) & n_woman(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_woman(x1))