who that was hard , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (WHNP_0 (WP_0 who)) (S_1 (NP_0 (DT_1 that)) (VP_5 (VBD_1 was) (ADJP_0 (JJ_0 hard))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))