the best ensemble casts of the year 
(ROOT (NP (NP (DT the) (JJS best) (NN ensemble) (NNS casts)) (PP (IN of) (NP (DT the) (NN year)))))
(ROOT (NP (NP (DT ) (JJS ) (NN ) (NNS )) (PP (IN ) (NP (DT ) (NN )))))