what ( denis ) accomplishes in his chilling , unnerving film 
(ROOT (SBAR (WHNP (WP what)) (-LRB- -LRB-) (NP (NNP denis)) (-RRB- -RRB-) (VP (VBZ accomplishes) (PP (IN in) (NP (PRP$ his) (JJ chilling) (, ,) (JJ unnerving) (NN film))))))
(ROOT (SBAR (WHNP (WP )) (-LRB- ) (NP (NNP )) (-RRB- ) (VP (VBZ ) (PP (IN ) (NP (PRP$ ) (JJ ) (, ) (JJ ) (NN ))))))