to had kids of they could tell .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (S_2 (VP_0 (TO_0 to) (VP_1 (ATVP_2 (VBD_2 had) (NP_3 (NNS_1 kids))) (PP_1 (IN_1 of))))) (NP_0 (PRP_1 they))) (VP_3 (MD_0 could) (VP_1 (VB_0 tell)))) (DOT_0 .)))