does n't really add up to much . 
(ROOT (S (VP (VBZ does) (RB n't) (ADVP (RB really)) (VP (VB add) (PRT (RP up)) (PP (IN to) (NP (JJ much))))) (. .)))
(ROOT (S (VP (VBZ ) (RB ) (ADVP (RB )) (VP (VB ) (PRT (RP )) (PP (IN ) (NP (JJ ))))) (. )))