(S (S (BASENP (PRP It)) (VP (VBZ has) (VP (VBN been) (VP (VBN confirmed) (SBAR (IN that) (S (NP (BASENP (NN eight) (JJ thoroughbred) (NN race) (NNS horses)) (PP (IN at) (NP (BASENP (NNP Randwick) (NNP Racecourse)) (PP (IN in) (BASENP (NNP Sydney)))))) (VP (VBP have) (VP (VBN been) (VP (VBN infected) (PP (IN with) (BASENP (JJ equine) (NN influenza)))))))))))) (PERIOD .))