billy crystal and robert de niro sleepwalk through vulgarities in a sequel you can refuse . 
(ROOT (S (NP (NP (NNP billy) (NN crystal)) (CC and) (NP (NNP robert) (FW de) (NNP niro))) (VP (VB sleepwalk) (PP (IN through) (NP (NNS vulgarities))) (PP (IN in) (NP (NP (DT a) (NN sequel)) (SBAR (S (NP (PRP you)) (VP (MD can) (VP (VB refuse)))))))) (. .)))
(ROOT (S (NP (NP (NNP ) (NN )) (CC ) (NP (NNP ) (FW ) (NNP ))) (VP (VB ) (PP (IN ) (NP (NNS ))) (PP (IN ) (NP (NP (DT ) (NN )) (SBAR (S (NP (PRP )) (VP (MD ) (VP (VB )))))))) (. )))