himself felt to be grimaced n<apostrophe>t n<apostrophe>t Then .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 himself)) (VP_4 (VBD_2 felt) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 be) (S_2 (VP_0 (ATVP_4 (VBD_0 grimaced) (RB_1 n<apostrophe>t)) (ADVP_0 (RB_1 n<apostrophe>t) (RB_1 Then))))))))) (DOT_0 .)))