unmistakably into in thick sturdy the hill , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (PP_2 (ATPP_0 (ADVP_0 (RB_0 unmistakably)) (IN_2 into)) (PP_2 (IN_0 in) (NP_3 (ATNP_0 (ADJP_0 (JJ_0 thick)) (JJ_0 sturdy)) (NP_5 (DT_0 the) (NN_2 hill))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))