it <apostrophe>s of his chin the lesson remains .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (S_1 (NP_0 (PRP_1 it)) (VP_5 (VBZ_0 <apostrophe>s) (PP_1 (IN_1 of) (NP_2 (PRPDOLLAR_0 his) (NN_0 chin))))) (NP_0 (DT_0 the) (NN_2 lesson))) (VP_3 (VBZ_0 remains))) (DOT_0 .)))