She felt shaking on something of the alpaca bag .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 She)) (VP_4 (VBD_2 felt) (S_2 (VP_0 (VBG_0 shaking) (PP_2 (IN_0 on) (NP_3 (NP_5 (NN_3 something)) (PP_0 (IN_1 of) (NP_6 (ATNP_1 (DT_0 the) (NN_3 alpaca)) (NN_1 bag))))))))) (DOT_0 .)))