`` on water ballet was stepping not .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (TICK_0 ``) (PP_2 (IN_0 on) (NP_3 (NN_3 water) (JJ_0 ballet)))) (VP_3 (VBD_1 was) (VP_2 (VBG_0 stepping) (NP_2 (RB_1 not))))) (DOT_0 .)))