this is n't exactly profound cinema , but 
(ROOT (S (S (NP (DT this)) (VP (VBZ is) (RB n't) (ADVP (RB exactly)) (NP (JJ profound) (NN cinema)))) (, ,) (CC but)))
(ROOT (S (S (NP (DT )) (VP (VBZ ) (RB ) (ADVP (RB )) (NP (JJ ) (NN )))) (, ) (CC )))