a colorful , vibrant introduction to a universal human impulse 
(ROOT (NP (NP (DT a) (JJ colorful) (, ,) (JJ vibrant) (NN introduction)) (PP (IN to) (NP (DT a) (JJ universal) (JJ human) (NN impulse)))))
(ROOT (NP (NP (DT ) (JJ ) (, ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (JJ ) (NN )))))