conference grimaced now , you were teaching Maybe .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_0 (S_1 (NP_0 (NN_2 conference)) (VP_5 (VBD_1 grimaced) (ADVP_0 (RB_0 now)))) (COMMA_0 ,)) (NP_0 (PRP_1 you))) (VP_3 (VBD_1 were) (VP_2 (VBG_0 teaching) (ADVP_0 (RB_0 Maybe))))) (DOT_0 .)))