a questionable kind of inexcusable dumb innocence 
(ROOT (NP (NP (DT a) (JJ questionable) (NN kind)) (PP (IN of) (NP (JJ inexcusable) (JJ dumb) (NN innocence)))))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (JJ ) (JJ ) (NN )))))