(S (S (NP (BASENP (DT The) (JJ total) (NN number)) (PP (IN of) (NP (BASENP (VBN confirmed) (JJ swine) (NN flu) (NNS cases)) (PP (IN in) (BASENP (DT the) (NNP United) (NNPS States)))))) (VP (VBZ stands) (PP (IN at) (BASENP (NN 20))))) (PERIOD .))