that face-up discovered later were what to get climbing .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 that) (NN_2 face-up)) (VP_4 (ATVP_1 (VBD_0 discovered) (RB_1 later)) (VP_5 (VBD_1 were) (SBAR_0 (WHNP_0 (WP_0 what)) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 get) (S_2 (VP_0 (VBG_0 climbing)))))))))) (DOT_0 .)))