to the chill knees , they unmistakably shifted he did back have four road .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_0 (ATS_2 (PP_2 (TO_0 to) (NP_3 (ATNP_0 (DT_0 the) (NN_3 chill)) (NNS_0 knees))) (COMMA_0 ,)) (S_1 (NP_0 (PRP_1 they)) (VP_5 (ADVP_0 (RB_0 unmistakably)) (VBN_0 shifted)))) (NP_0 (PRP_1 he))) (VP_3 (ATVP_1 (VBD_0 did) (RB_1 back)) (VP_1 (VB_0 have) (NP_3 (CD_0 four) (NN_2 road))))) (DOT_0 .)))