she , friends was Trailing her alpaca .
(ROOT_0 (S_0 (ATS_3 (NP_1 (ATNP_0 (NP_0 (PRP_1 she)) (COMMA_0 ,)) (NNS_0 friends)) (VP_4 (VBD_1 was) (VP_2 (VBG_0 Trailing) (NP_2 (PRPDOLLAR_0 her) (NN_0 alpaca))))) (DOT_0 .)))