`` of there one parents <apostrophe>s at .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (TICK_0 ``) (PP_1 (IN_1 of) (NP_0 (EX_0 there)))) (NP_0 (CD_0 one) (NNS_0 parents))) (VP_3 (VBZ_0 <apostrophe>s) (PP_1 (IN_1 at)))) (DOT_0 .)))