(S (S (BASENP (DT The) (NNS authors)) (VP (VP (ADVP (RB not) (RB only)) (VP (VP (VBP implicate) (BASENP (JJ professional) (NN baseball) (NN celebrity) (NNP Barry) (NNP Bonds))) (PP (IN in) (NP (BASENP (DT the) (NN use)) (PP (IN of) (BASENP (JJ performance-enhancing) (NNS drugs))))))) (CONJP (COMMA ,) (CONJP (CC but) (RB also))) (VP (VBP say) (SBAR (S (BASENP (NNP Gary) (NNP Sheffield)) (VP (VP (VBD received) (NP (BASENP (JJ human) (NN growth) (NN hormone)) (CC and) (BASENP (NN testosterone)))) (PP (IN from) (NP (BASENP (NNP Greg) (NNP Anderson)) (COMMA ,) (NP (BASENP (NNP Bonds) (POS 's)) (BASENP (JJ personal) (NN trainer))))))))))) (PERIOD .))