them just mumbled back on dude crazy of freezing .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 them)) (ADVP_0 (RB_0 just))) (VP_3 (ATVP_3 (VBD_2 mumbled) (PRT_0 (RP_0 back))) (PP_2 (IN_0 on) (NP_3 (NP_6 (NN_3 dude) (JJ_0 crazy)) (PP_0 (IN_1 of) (NP_2 (NN_3 freezing))))))) (DOT_0 .)))