He could was n<apostrophe>t unmistakably really .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 He)) (VP_4 (MD_0 could) (VP_1 (ATVP_2 (ATVP_4 (VBD_1 was) (RB_1 n<apostrophe>t)) (ADVP_0 (RB_0 unmistakably))) (ADVP_0 (RB_0 really))))) (DOT_0 .)))