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(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (SBAR_0 (WHADVP_0 (WRB_0 Whenever)) (S_1 (ATS_1 (ATS_1 (NP_1 (PRP_0 She)) (ADVP_0 (DT_1 all))) (ADVP_0 (RB_0 maybe))) (VP_3 (ATVP_1 (MD_0 would) (ADVP_0 (RB_0 Did))) (ADJP_0 (JJ_0 sure))))) (COMMA_0 ,)) (NP_0 (DT_0 a) (NN_2 grass))) (VP_3 (VBD_0 knew))) (DOT_0 .)))