he sounded <apostrophe>s four friends might have up here .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 he)) (VP_4 (VBD_1 sounded) (VP_2 (VBZ_0 <apostrophe>s) (SBAR_0 (S_1 (NP_0 (CD_0 four) (NNS_0 friends)) (VP_5 (MD_0 might) (VP_1 (ATVP_2 (VB_0 have) (PRT_0 (RP_0 up))) (ADVP_0 (RB_0 here))))))))) (DOT_0 .)))