what piled now his perch , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (WHNP_0 (WP_0 what)) (S_2 (VP_0 (ATVP_0 (VBD_2 piled) (ADVP_0 (RB_0 now))) (NP_2 (PRPDOLLAR_0 his) (NN_0 perch))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))