it could so meant a world while they knew dead .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_1 it)) (VP_4 (ATVP_1 (MD_0 could) (ADVP_0 (RB_0 so))) (VP_5 (VBD_1 meant) (NP_3 (NP_5 (DT_0 a) (NN_2 world)) (SBAR_0 (IN_2 while) (S_1 (NP_0 (PRP_1 they)) (VP_5 (VBD_0 knew) (ADJP_0 (JJ_0 dead))))))))) (DOT_0 .)))