he studied to keep the ditch out muscle .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_1 he)) (VP_4 (VBN_0 studied) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 keep) (NP_3 (NP_5 (DT_0 the) (NN_2 ditch)) (PP_0 (IN_1 out) (NP_2 (NN_3 muscle))))))))) (DOT_0 .)))