this is the kind of subject matter that could so easily have been fumbled by a lesser filmmaker , 
(ROOT (S (NP (DT this)) (VP (VBZ is) (NP (NP (NP (DT the) (NN kind)) (PP (IN of) (NP (NN subject) (NN matter)))) (SBAR (WHNP (WDT that)) (S (VP (MD could) (ADVP (RB so) (RB easily)) (VP (VB have) (VP (VBN been) (VP (VBN fumbled) (PP (IN by) (NP (DT a) (JJR lesser) (NN filmmaker))))))))))) (, ,)))
(ROOT (S (NP (DT )) (VP (VBZ ) (NP (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ) (NN )))) (SBAR (WHNP (WDT )) (S (VP (MD ) (ADVP (RB ) (RB )) (VP (VB ) (VP (VBN ) (VP (VBN ) (PP (IN ) (NP (DT ) (JJR ) (NN ))))))))))) (, )))