Whenever there thought , he discovered a pink wall from freezing .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (SBAR_0 (WHADVP_0 (WRB_0 Whenever)) (S_1 (NP_0 (EX_0 there)) (VP_5 (VBD_1 thought)))) (COMMA_0 ,)) (NP_0 (PRP_1 he))) (VP_3 (ATVP_3 (VBD_0 discovered) (NP_6 (ATNP_1 (DT_0 a) (JJ_1 pink)) (NN_1 wall))) (PP_0 (IN_0 from) (NP_5 (NN_3 freezing))))) (DOT_0 .)))