sitting through dahmer 's two hours 
(ROOT (S (VP (VBG sitting) (PP (IN through) (NP (NP (NNP dahmer) (POS 's)) (CD two) (NNS hours))))))
(ROOT (S (VP (VBG ) (PP (IN ) (NP (NP (NNP ) (POS )) (CD ) (NNS ))))))