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(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 You)) (VP_4 (VBD_0 howled) (SBAR_0 (WHADVP_0 (WRB_0 when)) (S_1 (NP_0 (DT_0 the) (NN_2 boy)) (VP_5 (MD_0 <apostrophe>ll) (VP_1 (VB_0 be) (ADJP_0 (JJ_0 trendy)))))))) (DOT_0 .)))