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(ROOT_0 (S_0 (ATS_3 (ATS_4 (ATS_0 (S_1 (ATS_1 (ATS_2 (PP_2 (ATPP_0 (ADVP_0 (RB_1 back) (NP_4 (ATNP_0 (DT_0 the) (NN_3 dirt)) (POS_0 <apostrophe>s))) (IN_2 If)) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 frayed)) (NN_1 bag))) (COMMA_0 ,)) (NP_0 (DT_1 that))) (VP_3 (VBD_0 discovered))) (COMMA_0 ,)) (CC_0 and)) (S_1 (NP_0 (PRP_1 it)) (VP_5 (VBD_1 did) (ADJP_0 (RB_0 maybe) (JJ_0 bare))))) (DOT_0 .)))