episodic choppiness , undermining the story 's emotional thrust 
(ROOT (S (NP (JJ episodic) (NN choppiness)) (, ,) (S (VP (VBG undermining) (NP (NP (DT the) (NN story) (POS 's)) (JJ emotional) (NN thrust))))))
(ROOT (S (NP (JJ ) (NN )) (, ) (S (VP (VBG ) (NP (NP (DT ) (NN ) (POS )) (JJ ) (NN ))))))