(S (S (NP (BASENP (NNP Hynek) (NNP Burda)) (PP (IN of) (NP (NP (BASENP (DT the) (NNP University)) (PP (IN of) (BASENP (NNP Duisburg-Essen)))) (PP (IN in) (BASENP (NNP Germany)))))) (VP (VBD led) (NP (BASENP (DT the) (NN team)) (SBAR (WHNP (WDT that)) (S (VP (VBD announced) (BASENP (DT the) (JJ unconfirmed) (NN study)))))))) (PERIOD .))