to make up how to know , And it could even be .
(ROOT_0 (S_0 (ATS_3 (ATS_4 (ATS_0 (S_2 (VP_0 (TO_0 to) (VP_1 (ATVP_0 (VB_0 make) (PRT_0 (RP_0 up))) (SBAR_0 (WHADVP_0 (WRB_0 how)) (S_1 (VP_0 (TO_0 to) (VP_1 (VB_0 know)))))))) (COMMA_0 ,)) (CC_0 And)) (S_1 (NP_0 (PRP_1 it)) (VP_5 (ATVP_1 (MD_0 could) (RB_1 even)) (VP_1 (VB_0 be))))) (DOT_0 .)))