that months heard unmistakably as it <apostrophe>s of .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 that) (NNS_0 months)) (VP_4 (VBD_0 heard) (SBAR_0 (ATSBAR_3 (RB_0 unmistakably) (IN_2 as)) (S_1 (NP_0 (PRP_1 it)) (VP_5 (VBZ_0 <apostrophe>s) (PP_1 (IN_1 of))))))) (DOT_0 .)))