The luggage <apostrophe>s out really heard .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 The) (NN_2 luggage)) (VP_4 (ATVP_1 (VBZ_0 <apostrophe>s) (PRT_0 (RP_0 out))) (VP_5 (ADVP_0 (RB_0 really)) (VBN_0 heard)))) (DOT_0 .)))