the film , while not exactly assured in its execution , 
(ROOT (S (NP (DT the) (NN film)) (, ,) (SBAR (IN while) (S (ADVP (RB not) (RB exactly)) (VP (VBN assured) (PP (IN in) (NP (PRP$ its) (NN execution)))))) (, ,)))
(ROOT (S (NP (DT ) (NN )) (, ) (SBAR (IN ) (S (ADVP (RB ) (RB )) (VP (VBN ) (PP (IN ) (NP (PRP$ ) (NN )))))) (, )))