Noah keep down : Noah stifled the content bag .
(ROOT_0 (S_0 (ATS_3 (ATS_4 (S_1 (NP_0 (NNP_0 Noah)) (VP_5 (VB_0 keep) (PRT_0 (RP_0 down)))) (COLON_0 :)) (S_1 (NP_0 (NNP_0 Noah)) (VP_5 (VBD_0 stifled) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 content)) (NN_1 bag))))) (DOT_0 .)))