At brown flats , you was teaching to be .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (IN_0 At) (NP_3 (JJ_1 brown) (NNS_0 flats))) (COMMA_0 ,)) (NP_0 (PRP_1 you))) (VP_3 (VBD_1 was) (VP_2 (VBG_0 teaching) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 be))))))) (DOT_0 .)))