(S (S (BASENP (DT The) (NNS tests)) (VP (VBD were) (VP (VBN conducted) (PP (IN by) (NP (BASENP (NNP Lonnie) (NNP Thompson)) (COMMA ,) (NP (BASENP (DT a) (NN professor)) (PP (IN at) (BASENP (NNP Ohio) (NNP University))))))))) (PERIOD .))