he remains her mutter unmistakably while <apostrophe><apostrophe> .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_1 he)) (VP_4 (VBZ_0 remains) (S_1 (NP_1 (PRP_0 her)) (VP_5 (VBP_0 mutter) (PP_2 (ATPP_0 (ADVP_0 (RB_0 unmistakably)) (IN_2 while)) (APOSTROPHE_0 <apostrophe><apostrophe>)))))) (DOT_0 .)))