that are more silly than scary 
(ROOT (S (NP (DT that)) (VP (VBP are) (ADJP (ADJP (RBR more) (JJ silly)) (PP (IN than) (FRAG (ADJP (JJ scary))))))))
(ROOT (S (NP (DT )) (VP (VBP ) (ADJP (ADJP (RBR ) (JJ )) (PP (IN ) (FRAG (ADJP (JJ ))))))))