a group died to , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (S_1 (NP_0 (DT_0 a) (NN_2 group)) (VP_5 (VBD_2 died) (S_2 (VP_0 (TO_0 to)))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))