entertaining , if somewhat standardized , action 
(ROOT (NP (ADJP (VBG entertaining) (, ,) (SBAR (IN if) (FRAG (ADJP (RB somewhat) (VBN standardized)))) (, ,)) (NN action)))
(ROOT (NP (ADJP (VBG ) (, ) (SBAR (IN ) (FRAG (ADJP (RB ) (VBN )))) (, )) (NN )))