A woman is shoeing a horse.
A woman fixing a horshoe.
Shoeing a horse is not necessarily fixing a horshoe.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_shoe(e1) & n_horse(x2) & n_woman(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_fix(e1) & n_horshoe(x3) & (x1 = x2) & n_woman(x1))