it 's a setup so easy it borders on facile , but keeping the film from cheap-shot mediocrity is its crack cast . 
(ROOT (S (S (NP (PRP it)) (VP (VBZ 's) (NP (NP (DT a) (NN setup)) (ADJP (RB so) (JJ easy) (SBAR (S (NP (PRP it)) (VP (VBZ borders) (PP (IN on) (ADJP (JJ facile)))))))))) (, ,) (CC but) (SINV (VP (VBG keeping) (NP (DT the) (NN film)) (PP (IN from) (NP (ADJP (JJ cheap) (HYPH -) (NN shot)) (NN mediocrity)))) (VP (VBZ is)) (NP (PRP$ its) (NN crack) (NN cast))) (. .)))
(ROOT (S (S (NP (PRP )) (VP (VBZ ) (NP (NP (DT ) (NN )) (ADJP (RB ) (JJ ) (SBAR (S (NP (PRP )) (VP (VBZ ) (PP (IN ) (ADJP (JJ )))))))))) (, ) (CC ) (SINV (VP (VBG ) (NP (DT ) (NN )) (PP (IN ) (NP (ADJP (JJ ) (HYPH ) (NN )) (NN )))) (VP (VBZ )) (NP (PRP$ ) (NN ) (NN ))) (. )))