She thought back attended Sounding a Frozen n<apostrophe>t .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 She)) (VP_4 (ATVP_1 (VBD_1 thought) (ADVP_0 (RB_0 back))) (VP_5 (VBD_1 attended) (VP_2 (VBG_0 Sounding) (ADVP_0 (NP_5 (DT_0 a) (NN_2 Frozen)) (RB_1 n<apostrophe>t)))))) (DOT_0 .)))