They would heard when anything was up .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (MD_0 would) (VP_1 (VBN_0 heard) (SBAR_0 (WHADVP_0 (WRB_0 when)) (S_1 (NP_0 (NN_2 anything)) (VP_5 (VBD_0 was) (PRT_0 (RP_0 up)))))))) (DOT_0 .)))