`` wall friends <apostrophe>s four you happened .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_0 (TICK_0 ``) (S_1 (NP_0 (NN_1 wall) (NNS_0 friends)) (VP_5 (VBZ_0 <apostrophe>s) (NP_2 (CD_0 four))))) (NP_0 (PRP_1 you))) (VP_3 (VBD_0 happened))) (DOT_0 .)))