He shifted to teach to be down .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 He)) (VP_4 (VBN_0 shifted) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 teach) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 be) (ADJP_0 (RP_0 down)))))))))) (DOT_0 .)))