n<apostrophe>t boy was stepping on Cochabamba alpaca .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (RB_1 n<apostrophe>t) (NP_5 (NN_3 boy))) (VP_3 (VBD_1 was) (VP_2 (VBG_0 stepping) (PP_2 (IN_0 on) (NP_3 (NNP_1 Cochabamba) (NN_3 alpaca)))))) (DOT_0 .)))