She <apostrophe>s she knew back be lucky .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 She)) (VP_4 (VBZ_0 <apostrophe>s) (S_1 (NP_0 (PRP_1 she)) (VP_5 (ATVP_1 (VBD_0 knew) (RB_1 back)) (VP_1 (VB_0 be) (ADJP_0 (JJ_0 lucky))))))) (DOT_0 .)))