They had to give the air than a none .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (VBD_2 had) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 give) (NP_3 (NP_5 (DT_0 the) (NN_2 air)) (PP_0 (IN_1 than) (NP_5 (DT_0 a) (NN_2 none))))))))) (DOT_0 .)))