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(ROOT_0 (S_0 (ATS_3 (NP_0 (PRP_1 it)) (VP_2 (ATVP_4 (VBG_0 going) (NP_3 (NP_5 (DT_0 The) (NN_2 lesson)) (PP_0 (IN_1 of) (NP_5 (DT_0 a) (NN_2 lesson))))) (PP_2 (IN_0 in) (NP_3 (NP_6 (DT_0 the) (NNS_1 highlights)) (PP_0 (IN_1 on) (NP_2 (NP_4 (NNS_1 stones)) (VP_2 (VBG_0 dried) (ADVP_0 (RB_0 maybe))))))))) (DOT_0 .)))