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(ROOT_0 (S_0 (ATS_3 (ATS_1 (TICK_0 ``) (NP_1 (PRP_0 It))) (VP_3 (VBD_1 had) (VP_2 (VBG_0 Wiping) (PP_2 (IN_0 by) (NP_3 (NN_0 school) (NNS_1 remains)))))) (DOT_0 .)))