the story 's undeniably hard to follow 
(ROOT (S (NP (DT the) (NN story)) (VP (VBZ 's) (ADVP (RB undeniably)) (ADJP (JJ hard) (SBAR (S (VP (TO to) (VP (VB follow)))))))))
(ROOT (S (NP (DT ) (NN )) (VP (VBZ ) (ADVP (RB )) (ADJP (JJ ) (SBAR (S (VP (TO ) (VP (VB )))))))))