A girl is walking by a window with a purse.
A girl is wearing a purse while walking.
walking by a window with a purse is rephrased.
exists e1 x1 x2 x3.(by(e1,x2) & with(x2,x3) & n_purse(x3) & n_window(x2) & Actor(e1,x1) & v_walk(e1) & n_girl(x1))
exists e1 e2 x1 x2.(while(e1,e2) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_purse(x2) & n_girl(x1))