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(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 I)) (ADVP_0 (ATADVP_7 (JJR_0 higher) (CC_0 But)) (JJR_0 higher))) (VP_3 (VBD_1 looked) (VP_2 (VBN_0 listened)))) (DOT_0 .)))