a solid formula for successful animated movies 
(ROOT (NP (NP (DT a) (JJ solid) (NN formula)) (PP (IN for) (NP (JJ successful) (JJ animated) (NNS movies)))))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (JJ ) (JJ ) (NNS )))))