then that would be up what sitting up his seat .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ADVP_0 (RB_0 then)) (NP_0 (DT_1 that))) (VP_3 (MD_0 would) (VP_1 (ATVP_0 (VB_0 be) (PRT_0 (RP_0 up))) (SBAR_0 (WHNP_0 (WP_0 what)) (S_2 (VP_0 (ATVP_0 (VBG_0 sitting) (PRT_0 (RP_0 up))) (NP_2 (PRPDOLLAR_0 his) (NN_0 seat)))))))) (DOT_0 .)))