a dull , dumb and derivative horror film . 
(ROOT (NP (DT a) (JJ dull) (, ,) (JJ dumb) (CC and) (JJ derivative) (NN horror) (NN film) (. .)))
(ROOT (NP (DT ) (JJ ) (, ) (JJ ) (CC ) (JJ ) (NN ) (NN ) (. )))