since that had the happened eyes back <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (IN_2 since) (S_1 (NP_0 (DT_1 that)) (VP_5 (VBD_1 had) (NP_3 (ATNP_0 (DT_0 the) (VBN_0 happened)) (NNS_0 eyes))))) (ADVP_0 (RB_0 back))) (APOSTROPHE_0 <apostrophe><apostrophe>)))