like a change in ( herzog 's ) personal policy 
(ROOT (PP (IN like) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (-LRB- -LRB-) (NP (NNP herzog) (POS 's)) (-RRB- -RRB-) (JJ personal) (NN policy))))))
(ROOT (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (-LRB- ) (NP (NNP ) (POS )) (-RRB- ) (JJ ) (NN ))))))