this did back , it was keep down below .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_0 (S_1 (NP_0 (DT_1 this)) (VP_5 (VBD_0 did) (PRT_0 (RP_0 back)))) (COMMA_0 ,)) (NP_0 (PRP_1 it))) (VP_3 (VBD_1 was) (VP_2 (ATVP_2 (VB_0 keep) (PRT_0 (RP_0 down))) (ADVP_0 (RB_0 below))))) (DOT_0 .)))