dark , gritty , sometimes funny little gem 
(ROOT (FRAG (ADJP (JJ dark) (, ,) (JJ gritty) (, ,) (ADJP (RB sometimes) (JJ funny))) (NP (JJ little) (NN gem))))
(ROOT (FRAG (ADJP (JJ ) (, ) (JJ ) (, ) (ADJP (RB ) (JJ ))) (NP (JJ ) (NN ))))