classes of the ladies , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (PP_2 (ATPP_0 (NP_4 (NNS_1 classes)) (IN_1 of)) (NP_6 (DT_0 the) (NNS_1 ladies))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))