They mutter to a beak what were black , warm under a seven-hour chill .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (VBP_0 mutter) (PP_2 (TO_0 to) (NP_3 (NP_5 (DT_0 a) (NN_2 beak)) (SBAR_0 (WHNP_0 (WP_0 what)) (S_2 (VP_0 (ATVP_4 (VBD_0 were) (ADJP_0 (ATADJP_0 (JJ_1 black) (COMMA_0 ,)) (JJ_1 warm))) (PP_2 (IN_0 under) (NP_6 (ATNP_1 (DT_0 a) (JJ_1 seven-hour)) (NN_1 chill)))))))))) (DOT_0 .)))