I refer that he sheathed to be sheathed in inside not .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 I)) (VP_4 (VBP_0 refer) (SBAR_0 (WHNP_0 (WDT_0 that)) (S_1 (NP_1 (PRP_1 he)) (VP_5 (VBN_0 sheathed) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 be) (VP_2 (VBN_0 sheathed) (PP_0 (IN_1 in) (NP_2 (NN_3 inside) (RB_1 not)))))))))))) (DOT_0 .)))