that did n<apostrophe>t a rounded cluster , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (WHNP_0 (WDT_0 that)) (S_2 (VP_0 (ATVP_1 (VBD_1 did) (RB_1 n<apostrophe>t)) (NP_6 (ATNP_1 (DT_0 a) (JJ_1 rounded)) (NN_1 cluster))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))