does such a good job of it 
(ROOT (S (VP (VBZ does) (NP (NP (PDT such) (DT a) (JJ good) (NN job)) (PP (IN of) (NP (PRP it)))))))
(ROOT (S (VP (VBZ ) (NP (NP (PDT ) (DT ) (JJ ) (NN )) (PP (IN ) (NP (PRP )))))))