than class the hill pushed Zone but a sitting freezing .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (PP_1 (IN_1 than) (NP_2 (NN_3 class))) (NP_5 (DT_0 the) (NN_2 hill))) (VP_3 (VBD_0 pushed) (NP_3 (ATNP_0 (NP_6 (NNP_1 Zone)) (CC_0 but)) (NP_6 (ATNP_1 (DT_0 a) (VBG_0 sitting)) (NN_1 freezing))))) (DOT_0 .)))