the densest distillation of roberts ' movies 
(ROOT (NP (NP (DT the) (JJS densest) (NN distillation)) (PP (IN of) (NP (NP (NNS roberts) (POS ')) (NNS movies)))))
(ROOT (NP (NP (DT ) (JJS ) (NN )) (PP (IN ) (NP (NP (NNS ) (POS )) (NNS )))))