the movie slides downhill as soon as macho action conventions assert themselves . 
(ROOT (S (NP (DT the) (NN movie)) (VP (VBZ slides) (ADVP (RB downhill)) (ADVP (ADVP (RB as) (RB soon)) (SBAR (IN as) (S (NP (JJ macho) (NN action) (NNS conventions)) (VP (VBP assert) (NP (PRP themselves))))))) (. .)))
(ROOT (S (NP (DT ) (NN )) (VP (VBZ ) (ADVP (RB )) (ADVP (ADVP (RB ) (RB )) (SBAR (IN ) (S (NP (JJ ) (NN ) (NNS )) (VP (VBP ) (NP (PRP ))))))) (. )))