(S (S (NP (BASENP (NNS Researchers)) (PP (IN at) (NP (BASENP (NNP Japan) (POS 's)) (BASENP (NNP Kanazawa) (NNP University))))) (VP (VBD announced) (NP (BASENP (DT the) (NN identification)) (PP (IN of) (NP (NP (BASENP (DT a) (NN hormone)) (VP (VBN produced) (PP (IN by) (BASENP (DT the) (NN liver))))) (COMMA ,) (NP (ADVP (RB apparently)) (NP (BASENP (DT a) (ADJP (RB previously) (JJ unknown)) (NN cause)) (PP (IN of) (BASENP (NN insulin) (NN resistance)))))))))) (PERIOD .))