the muffled sky who sitting had Maybe up .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NP_6 (ATNP_1 (DT_0 the) (JJ_1 muffled)) (NN_1 sky)) (SBAR_0 (WHNP_0 (WP_0 who)) (S_2 (VP_0 (VBG_0 sitting))))) (VP_4 (ATVP_0 (VBD_2 had) (ADVP_0 (RB_0 Maybe))) (PRT_0 (RP_0 up)))) (DOT_0 .)))