(S (S (ADVP (RB So) (RB far)) (S (BASENP (DT the) (NN virus)) (VP (ADVP (RB only)) (VP (VBZ appears) (S (VP (TO to) (VP (VP (VP (VB have) (BASENP (VBN infected) (NNS horses))) (PP (IN in) (BASENP (NNP NSW) (CC and) (NNP Queensland)))) (COMMA ,) (PP (IN with) (NP (BASENP (NN 51) (VBN confirmed) (NNS cases)) (CC and) (NP (BASENP (DT another) (NN 400)) (ADJP (JJ suspected)))))))))))) (PERIOD .))