to a white api off the group , I began blackened Behind the teaching bag .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (TO_0 to) (NP_3 (NP_6 (ATNP_1 (DT_0 a) (JJ_1 white)) (NN_1 api)) (PP_0 (IN_1 off) (NP_5 (DT_0 the) (NN_2 group))))) (COMMA_0 ,)) (NP_0 (PRP_1 I))) (VP_3 (VBD_1 began) (VP_2 (VBN_0 blackened) (PP_2 (IN_0 Behind) (NP_6 (ATNP_1 (DT_0 the) (VBG_0 teaching)) (NN_1 bag)))))) (DOT_0 .)))