They below slithered had n<apostrophe>t way into story not unmistakably .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 They)) (ADVP_0 (RB_0 below))) (VP_3 (VBD_1 slithered) (VP_2 (ATVP_2 (ATVP_0 (VBD_2 had) (ADVP_0 (RB_1 n<apostrophe>t) (RB_1 way))) (PP_1 (IN_1 into) (NP_2 (NN_3 story) (RB_1 not)))) (ADVP_0 (RB_0 unmistakably))))) (DOT_0 .)))