this self-deprecating , biting and witty feature 
(ROOT (NP (DT this) (ADJP (ADJP (NN self) (HYPH -) (VBG deprecating)) (, ,) (ADJP (VBG biting) (CC and) (JJ witty))) (NN feature)))
(ROOT (NP (DT ) (ADJP (ADJP (NN ) (HYPH ) (VBG )) (, ) (ADJP (VBG ) (CC ) (JJ ))) (NN )))