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(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 They)) (ADVP_0 (RB_0 really))) (VP_3 (ATVP_3 (ATVP_2 (VBD_2 felt) (NP_3 (PRPDOLLAR_0 his) (NN_0 diamond))) (COMMA_0 ,)) (PP_0 (IN_1 of) (NP_2 (NP_4 (ATNP_0 (ADJP_0 (JJ_0 missing) (S_2 (VP_0 (TO_0 to) (VP_1 (ADVP_0 (RB_0 n<apostrophe>t)) (VBD_1 were))))) (JJ_0 hard)) (POS_0 <apostrophe>)) (VP_2 (VBG_0 teaching) (ADVP_0 (RB_0 together))))))) (DOT_0 .)))