is n't nearly surprising or clever enough to sustain a reasonable degree of suspense on its own . 
(ROOT (S (VP (VBZ is) (RB n't) (ADJP (RB nearly) (JJ surprising) (CC or) (JJ clever) (RB enough) (S (VP (TO to) (VP (VB sustain) (NP (NP (DT a) (JJ reasonable) (NN degree)) (PP (IN of) (NP (NN suspense)))) (PP (IN on) (NP (PRP$ its) (JJ own)))))))) (. .)))
(ROOT (S (VP (VBZ ) (RB ) (ADJP (RB ) (JJ ) (CC ) (JJ ) (RB ) (S (VP (TO ) (VP (VB ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN )))) (PP (IN ) (NP (PRP$ ) (JJ )))))))) (. )))