Cochabamba Because the grass assigned with a back Frozen .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NP_6 (NNP_1 Cochabamba)) (PP_0 (IN_1 Because) (NP_5 (DT_0 the) (NN_2 grass)))) (VP_4 (VBN_0 assigned) (PP_0 (IN_1 with) (NP_6 (ATNP_1 (DT_0 a) (JJ_1 back)) (NN_1 Frozen))))) (DOT_0 .)))