He would find to <apostrophe>s on heard because he left together .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 He)) (VP_4 (MD_0 would) (VP_1 (VB_0 find) (S_2 (VP_0 (TO_0 to) (VP_1 (ATVP_1 (VBZ_0 <apostrophe>s) (PRT_0 (RP_0 on))) (VP_1 (VBN_0 heard) (SBAR_0 (IN_2 because) (S_1 (NP_0 (PRP_1 he)) (VP_5 (VBD_1 left) (ADVP_0 (RB_0 together)))))))))))) (DOT_0 .)))