what might have been readily dismissed as the tiresome rant of an aging filmmaker still thumbing his nose at convention takes a surprising , subtle turn at the midway point . 
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(ROOT (S (SBAR (WHNP (WP )) (S (VP (MD ) (VP (VB ) (VP (VBN ) (ADVP (RB )) (VP (VBN ) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NP (DT ) (VBG ) (NN )) (VP (ADVP (RB )) (VBG ) (NP (PRP$ ) (NN )) (PP (IN ) (NP (NN )))))))))))))) (VP (VBZ ) (NP (DT ) (JJ ) (, ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN )))) (. )))