it 's a dark , gritty story but 
(ROOT (S (NP (PRP it)) (VP (VBZ 's) (NP (DT a) (JJ dark) (, ,) (JJ gritty) (NN story))) (CC but)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (NP (DT ) (JJ ) (, ) (JJ ) (NN ))) (CC )))