on The freezing a boy , This was is what <apostrophe>s purple things unmistakably .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (IN_0 on) (NP_3 (ATNP_0 (DT_0 The) (NN_3 freezing)) (NP_5 (DT_0 a) (NN_2 boy)))) (COMMA_0 ,)) (NP_0 (DT_1 This))) (VP_3 (VBD_1 was) (VP_2 (VBZ_0 is) (SBAR_0 (WHNP_0 (WP_0 what)) (S_2 (VP_0 (ATVP_4 (VBZ_0 <apostrophe>s) (NP_2 (JJ_1 purple) (NNS_1 things))) (ADVP_0 (RB_0 unmistakably)))))))) (DOT_0 .)))