them know n<apostrophe>t slithered to be .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 them)) (VP_4 (ATVP_1 (VBP_0 know) (RB_1 n<apostrophe>t)) (VP_5 (VBD_2 slithered) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 be))))))) (DOT_0 .)))