the ditch could so happened just later crumpled .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_0 the) (NN_2 ditch)) (VP_4 (ATVP_1 (MD_0 could) (RB_1 so)) (VP_5 (VBD_0 happened) (ADJP_0 (ATADJP_0 (RB_0 just) (RB_1 later)) (VBN_0 crumpled))))) (DOT_0 .)))