in I had ballet , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (PP_2 (IN_0 in) (SBAR_0 (S_1 (NP_0 (PRP_1 I)) (VP_5 (VBD_0 had) (ADJP_0 (JJ_0 ballet)))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))