were by yawn it stifled again warm .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (S_2 (VP_0 (VBD_0 were) (PP_1 (IN_1 by) (NP_2 (NN_3 yawn))))) (NP_0 (PRP_1 it))) (VP_3 (VBD_1 stifled) (ADJP_0 (RB_0 again) (JJ_0 warm)))) (DOT_0 .)))