her refer what to her friend .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 her)) (VP_4 (VBP_0 refer) (SBAR_0 (WHNP_0 (WP_0 what)) (S_2 (VP_0 (TO_0 to) (VP_1 (NP_2 (PRPDOLLAR_0 her) (NN_0 friend)))))))) (DOT_0 .)))