back the sky was n<apostrophe>t little , sudden .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (RB_1 back) (NP_5 (DT_0 the) (NN_2 sky))) (VP_3 (ATVP_1 (VBD_1 was) (RB_1 n<apostrophe>t)) (ADJP_0 (ATADJP_0 (JJ_1 little) (COMMA_0 ,)) (JJ_1 sudden)))) (DOT_0 .)))