the main story ... is compelling enough , but it 's difficult to shrug off the annoyance of that chatty fish . 
(ROOT (S (S (NP (DT the) (JJ main) (NN story)) (, ...) (VP (VBZ is) (ADJP (JJ compelling) (ADVP (RB enough))))) (, ,) (CC but) (S (NP (NP (PRP it))) (VP (VBZ 's) (ADJP (JJ difficult)) (S (VP (TO to) (VP (VB shrug) (PRT (RP off)) (NP (NP (DT the) (NN annoyance)) (PP (IN of) (NP (DT that) (JJ chatty) (NN fish))))))))) (. .)))
(ROOT (S (S (NP (DT ) (JJ ) (NN )) (, ) (VP (VBZ ) (ADJP (JJ ) (ADVP (RB ))))) (, ) (CC ) (S (NP (NP (PRP ))) (VP (VBZ ) (ADJP (JJ )) (S (VP (TO ) (VP (VB ) (PRT (RP )) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ))))))))) (. )))