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(ROOT_0 (S_0 (ATS_3 (ATS_4 (ATS_0 (S_1 (NP_0 (PRP_1 it)) (VP_5 (MD_0 could) (VP_1 (ATVP_1 (VBD_0 were) (RB_1 not)) (VP_1 (VB_0 speak) (S_2 (TO_0 to)))))) (COMMA_0 ,)) (CC_0 and)) (S_1 (NP_0 (PRP_1 they)) (VP_5 (MD_0 could) (VP_1 (VB_0 be) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 keep)))))))) (DOT_0 .)))