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(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 He)) (VP_4 (VBD_1 looked) (VP_2 (VBN_0 sheathed) (S_2 (VP_0 (ATVP_4 (ATVP_4 (VBN_0 why) (ADJP_0 (ATADJP_0 (ATADJP_0 (JJ_1 sturdy) (COMMA_0 ,)) (JJ_0 appropriate)) (VBN_0 used))) (PRT_0 (RP_0 up))) (PP_2 (ATPP_0 (ADVP_0 (RB_1 too) (RB_1 n<apostrophe>t)) (IN_2 as)) (APOSTROPHE_0 <apostrophe><apostrophe>))))))) (DOT_0 .)))