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(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 It)) (VP_4 (VBD_0 did) (SBAR_0 (WHADVP_0 (WRB_0 when)) (S_1 (NP_0 (NNP_0 Today)) (VP_5 (ATVP_4 (VB_0 teach) (ADVP_0 (RB_0 anymore))) (ADVP_0 (RB_1 back) (RB_1 n<apostrophe>t))))))) (DOT_0 .)))