`` at discovered in schoolhouse holes <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (TICK_0 ``) (PP_1 (IN_1 at) (S_2 (VP_0 (VBD_0 discovered) (PP_1 (IN_1 in) (NP_2 (JJ_1 schoolhouse) (NNS_1 holes))))))) (APOSTROPHE_0 <apostrophe><apostrophe>)))