now his knees was happened at the world .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ADVP_0 (RB_0 now)) (NP_0 (PRPDOLLAR_0 his) (NNS_0 knees))) (VP_3 (VBD_1 was) (VP_2 (VBN_0 happened) (PP_0 (IN_1 at) (NP_5 (DT_0 the) (NN_2 world)))))) (DOT_0 .)))