director hoffman , his writer and kline 's agent should serve detention 
(ROOT (S (NP (NP (NN director) (NNP hoffman)) (, ,) (NP (NP (PRP$ his) (NN writer)) (CC and) (NP (NP (NNP kline) (POS 's)) (NN agent)))) (VP (MD should) (VP (VB serve) (NP (NN detention))))))
(ROOT (S (NP (NP (NN ) (NNP )) (, ) (NP (NP (PRP$ ) (NN )) (CC ) (NP (NP (NNP ) (POS )) (NN )))) (VP (MD ) (VP (VB ) (NP (NN ))))))