I could leave them . <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (ATS_3 (NP_1 (PRP_1 I)) (VP_4 (MD_0 could) (VP_1 (VB_0 leave) (NP_1 (PRP_0 them))))) (DOT_0 .)) (APOSTROPHE_0 <apostrophe><apostrophe>)))