of the car slept the boy sounded stepping then .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (PP_1 (IN_1 of) (NP_2 (ATNP_0 (DT_0 the) (NN_3 car)) (NNP_1 slept))) (NP_5 (DT_0 the) (NN_2 boy))) (VP_3 (VBD_1 sounded) (VP_2 (VBG_0 stepping) (ADVP_0 (RB_0 then))))) (DOT_0 .)))