her mutter who to classes but feathers .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 her)) (VP_4 (VBP_0 mutter) (SBAR_0 (WHNP_0 (WP_0 who)) (S_2 (VP_0 (TO_0 to) (VP_1 (NP_2 (ATNP_0 (NP_4 (NNS_1 classes)) (CC_0 but)) (NP_4 (NNS_1 feathers))))))))) (DOT_0 .)))