lost some of the dramatic conviction that underlies the best of comedies 
(ROOT (S (VP (VBD lost) (NP (NP (DT some)) (PP (IN of) (NP (NP (DT the) (JJ dramatic) (NN conviction)) (SBAR (WHNP (WDT that)) (S (VP (VBZ underlies) (NP (NP (DT the) (JJS best)) (PP (IN of) (NP (NNS comedies)))))))))))))
(ROOT (S (VP (VBD ) (NP (NP (DT )) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (NP (NP (DT ) (JJS )) (PP (IN ) (NP (NNS )))))))))))))