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(ROOT_0 (S_0 (ATS_3 (ATS_3 (NP_1 (ATNP_2 (DT_0 a) (ADJP_0 (ATADJP_0 (RB_0 Seriously) (JJ_0 ballet)) (JJ_1 thick))) (COMMA_0 ,)) (VP_4 (ATVP_4 (VBZ_0 is) (NP_2 (NP_4 (DT_0 a) (NN_2 conference)) (VP_2 (VBG_0 stepping) (PP_2 (IN_0 In) (NP_3 (NNP_1 Quechua) (NNS_1 boulders)))))) (ADVP_0 (RB_0 really)))) (DOT_0 .)) (DOT_0 .)))