it adds up to big box office bucks all but guaranteed . 
(ROOT (S (NP (PRP it)) (VP (VBZ adds) (PRT (RP up)) (PP (IN to) (NP (NP (JJ big) (NML (NN box) (NN office)) (NNS bucks)) (ADJP (ADVP (RB all) (CC but)) (VBN guaranteed))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (PRT (RP )) (PP (IN ) (NP (NP (JJ ) (NML (NN ) (NN )) (NNS )) (ADJP (ADVP (RB ) (CC )) (VBN ))))) (. )))