an impressive roster of stars and direction 
(ROOT (NP (NP (DT an) (JJ impressive) (NN roster)) (PP (IN of) (NP (NNS stars) (CC and) (NN direction)))))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NNS ) (CC ) (NN )))))