He still <apostrophe>s since he , terrible friend boulders .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 He)) (ADVP_0 (RB_0 still))) (VP_3 (VBZ_0 <apostrophe>s) (PP_1 (IN_1 since) (NP_2 (ATNP_2 (ATNP_0 (NP_0 (PRP_1 he)) (COMMA_0 ,)) (NP_3 (JJ_1 terrible) (NN_0 friend))) (NNS_1 boulders))))) (DOT_0 .)))