mildly funny , sometimes tedious , ultimately insignificant 
(ROOT (ADJP (ADJP (RB mildly) (JJ funny)) (, ,) (ADJP (RB sometimes) (JJ tedious)) (, ,) (ADJP (RB ultimately) (JJ insignificant))))
(ROOT (ADJP (ADJP (RB ) (JJ )) (, ) (ADJP (RB ) (JJ )) (, ) (ADJP (RB ) (JJ ))))