Bolivian , , while back was sheathed her turned as feathers .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (ATNP_2 (NNP_0 Bolivian) (COMMA_0 ,)) (COMMA_0 ,)) (ADVP_0 (IN_2 while) (RB_1 back))) (VP_3 (VBD_1 was) (VP_2 (VBN_0 sheathed) (S_2 (NP_1 (PRP_0 her)) (VP_5 (VBD_2 turned) (PP_2 (IN_0 as) (NP_6 (NNS_1 feathers)))))))) (DOT_0 .)))