how really sure it used back of the Bible , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (WHADVP_0 (WRB_0 how) (ADJP_0 (RB_0 really) (JJ_0 sure))) (S_1 (NP_0 (PRP_1 it)) (VP_5 (ATVP_3 (VBD_2 used) (PRT_0 (RP_0 back))) (PP_0 (IN_1 of) (NP_2 (DT_0 the) (NNP_1 Bible)))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))