never quite justifies its own existence . 
(ROOT (S (ADVP (RB never)) (ADVP (RB quite)) (VP (VBZ justifies) (NP (PRP$ its) (JJ own) (NN existence))) (. .)))
(ROOT (S (ADVP (RB )) (ADVP (RB )) (VP (VBZ ) (NP (PRP$ ) (JJ ) (NN ))) (. )))