They <apostrophe>ll unmistakably warily was .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (ATVP_1 (MD_0 <apostrophe>ll) (ADVP_0 (RB_0 unmistakably))) (VP_1 (ADVP_0 (RB_0 warily)) (VBD_1 was)))) (DOT_0 .)))