her asked what refer there n<apostrophe>t higher .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 her)) (VP_4 (VBD_0 asked) (SBAR_0 (WHNP_0 (WP_0 what)) (S_2 (VP_0 (ATVP_1 (VBP_0 refer) (RB_1 there)) (NP_6 (RB_1 n<apostrophe>t) (JJR_0 higher))))))) (DOT_0 .)))