an entertaining , if somewhat standardized , action movie . 
(ROOT (NP (DT an) (ADJP (ADJP (JJ entertaining)) (, ,) (SBAR (IN if) (FRAG (ADJP (RB somewhat) (VBN standardized)))) (, ,)) (NN action) (NN movie) (. .)))
(ROOT (NP (DT ) (ADJP (ADJP (JJ )) (, ) (SBAR (IN ) (FRAG (ADJP (RB ) (VBN )))) (, )) (NN ) (NN ) (. )))