in from teeth , he was why .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (IN_0 in) (PP_2 (IN_0 from) (NP_3 (NNS_1 teeth)))) (COMMA_0 ,)) (NP_0 (PRP_1 he))) (VP_3 (VBD_1 was) (VP_2 (VBN_0 why)))) (DOT_0 .)))