`` He spit back on dude of cows .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (TICK_0 ``) (NP_1 (PRP_0 He))) (VP_3 (ATVP_3 (VBD_2 spit) (PRT_0 (RP_0 back))) (PP_2 (IN_0 on) (NP_3 (NP_5 (NN_3 dude)) (PP_0 (IN_1 of) (NP_6 (NNS_1 cows))))))) (DOT_0 .)))