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(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 It)) (VP_4 (ATVP_1 (VBD_1 was) (ADVP_0 (RB_1 Then) (RB_1 there))) (VP_5 (VBD_0 discovered) (ADJP_0 (ATADJP_0 (ATADJP_0 (RB_0 then) (RB_1 n<apostrophe>t)) (JJ_0 Several)) (JJ_1 strong))))) (DOT_0 .)))