of a self-reflexive , philosophical nature 
(ROOT (PP (IN of) (NP (DT a) (ADJP (NN self) (HYPH -) (JJ reflexive)) (, ,) (JJ philosophical) (NN nature))))
(ROOT (PP (IN ) (NP (DT ) (ADJP (NN ) (HYPH ) (JJ )) (, ) (JJ ) (NN ))))