he a group they began looking a hill .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (S_2 (NP_1 (PRP_1 he)) (NP_5 (DT_0 a) (NN_2 group))) (NP_0 (PRP_1 they))) (VP_3 (VBD_1 began) (VP_2 (VBG_0 looking) (NP_5 (DT_0 a) (NN_2 hill))))) (DOT_0 .)))