the filmmakers keep pushing the jokes at the expense of character until things fall apart . 
(ROOT (S (NP (DT the) (NNS filmmakers)) (VP (VBP keep) (S (VP (VBG pushing) (NP (DT the) (NNS jokes)) (PP (IN at) (NP (NP (DT the) (NN expense)) (PP (IN of) (NP (NN character))))) (SBAR (IN until) (S (NP (NNS things)) (VP (VBP fall) (ADVP (RB apart)))))))) (. .)))
(ROOT (S (NP (DT ) (NNS )) (VP (VBP ) (S (VP (VBG ) (NP (DT ) (NNS )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ))))) (SBAR (IN ) (S (NP (NNS )) (VP (VBP ) (ADVP (RB )))))))) (. )))