(S (S (BASENP (NN Wildlife) (NNS scientists)) (VP (VP (VBD confirmed) (PP (IN on) (BASENP (NNP Thursday)))) (SBAR (IN that) (S (NP (NP (BASENP (DT a) (NN bird)) (VP (ADVP (RB long)) (VP (VBN thought) (S (ADJP (JJ extinct)))))) (PRN (COMMA ,) (BASENP (DT the) (JJ Ivory-billed) (NN woodpecker)) (COMMA ,))) (VP (VBZ has) (VP (VBN been) (VP (VBN found) (PP (IN in) (BASENP (NNP Arkansas)))))))))) (PERIOD .))