on of the emerald holes , he began .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (IN_0 on) (PP_2 (IN_0 of) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 emerald)) (NNS_1 holes)))) (COMMA_0 ,)) (NP_0 (PRP_1 he))) (VP_3 (VBD_0 began))) (DOT_0 .)))