that most frightening of all movies 
(ROOT (NP (NP (DT that) (ADJP (RBS most) (JJ frightening))) (PP (IN of) (NP (DT all) (NNS movies)))))
(ROOT (NP (NP (DT ) (ADJP (RBS ) (JJ ))) (PP (IN ) (NP (DT ) (NNS )))))