to stop lacy the halt happened .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (SBAR_0 (VP_0 (TO_0 to) (VP_1 (VB_0 stop)))) (ADVP_0 (RB_0 lacy))) (NP_0 (DT_0 the) (NN_2 halt))) (VP_3 (VBD_0 happened))) (DOT_0 .)))