that powdery discovered back saw In I .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 that) (NN_2 powdery)) (VP_4 (ATVP_1 (VBD_0 discovered) (RB_1 back)) (VP_5 (VBD_1 saw) (PP_1 (IN_1 In) (NP_0 (PRP_1 I)))))) (DOT_0 .)))