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(ROOT_0 (S_0 (ATS_3 (ATS_1 (CC_0 and) (NP_1 (PRP_0 It))) (VP_3 (ATVP_1 (VBD_0 were) (RB_1 back)) (VP_5 (ATVP_3 (VBD_2 fell) (PRT_0 (RP_0 up))) (S_2 (VP_0 (ATVP_4 (VBG_0 staying) (NP_5 (NN_3 air))) (PP_2 (TO_0 to) (NP_2 (NN_3 conference) (RB_1 not)))))))) (DOT_0 .)))