is twice as bestial but half as funny 
(ROOT (S (VP (VBZ is) (ADJP (ADJP (RB twice) (RB as) (JJ bestial)) (CC but) (ADJP (NN half) (IN as) (JJ funny))))))
(ROOT (S (VP (VBZ ) (ADJP (ADJP (RB ) (RB ) (JJ )) (CC ) (ADJP (NN ) (IN ) (JJ ))))))