since all eyes together used even <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (IN_2 since) (S_1 (NP_1 (DT_1 all) (NNS_0 eyes)) (VP_5 (ADVP_0 (RB_0 together)) (VBN_0 used)))) (ADVP_0 (RB_0 even))) (APOSTROPHE_0 <apostrophe><apostrophe>)))