while he march here onto the schoolhouse yawn , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (IN_2 while) (S_1 (NP_0 (PRP_1 he)) (VP_5 (ATVP_4 (VB_0 march) (ADVP_0 (RB_0 here))) (PP_2 (IN_0 onto) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 schoolhouse)) (NN_1 yawn)))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))