sleeping an tree for they asked . <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (ATS_3 (ATS_1 (S_2 (VP_0 (VBG_0 sleeping))) (NP_0 (NP_5 (DT_0 an) (NN_2 tree)) (PP_1 (IN_1 for) (NP_0 (PRP_1 they))))) (VP_3 (VBD_0 asked))) (DOT_0 .)) (APOSTROPHE_0 <apostrophe><apostrophe>)))