dismissed as the tiresome rant of an aging filmmaker still thumbing his nose at convention 
(ROOT (VP (VBD dismissed) (PP (IN as) (NP (NP (DT the) (JJ tiresome) (NN rant)) (PP (IN of) (NP (NP (DT an) (VBG aging) (NN filmmaker)) (VP (ADVP (RB still)) (VBG thumbing) (NP (PRP$ his) (NN nose)) (PP (IN at) (NP (NN convention))))))))))
(ROOT (VP (VBD ) (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 ))))))))))