and He were doing to a group by the thick knoll .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (CC_0 and) (NP_1 (PRP_0 He))) (VP_3 (VBD_1 were) (VP_2 (VBG_0 doing) (PP_2 (TO_0 to) (NP_3 (NP_5 (DT_0 a) (NN_2 group)) (PP_0 (IN_1 by) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 thick)) (NN_1 knoll)))))))) (DOT_0 .)))