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(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 It)) (VP_4 (ATVP_2 (ATVP_0 (VBD_2 was) (ADVP_0 (RB_0 seriously))) (PP_0 (IN_1 in) (NP_2 (NN_2 lot) (NN_3 gravel)))) (SBAR_0 (IN_2 while) (S_1 (NP_0 (PRPDOLLAR_0 his) (NNS_0 knees)) (VP_5 (VBZ_0 <apostrophe>s) (NP_2 (PRPDOLLAR_0 her) (JJ_0 fine))))))) (DOT_0 .)))