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(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (ATS_0 (S_2 (VP_0 (TO_0 to) (VP_1 (VBN_0 why) (NP_1 (DT_1 The) (NN_2 class))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)) (NP_0 (DT_1 this))) (VP_3 (VBD_1 was) (VP_2 (VBG_0 sitting) (PP_2 (TO_0 to) (NP_3 (NNS_1 kids)))))) (DOT_0 .)))