(S (S (BASENP (NNP US) (NN president) (NNP Barack) (NNP Obama)) (VP (VP (VP (VP (VBD declared) (BASENP (DT a) (NN swine) (NN flu) (NN emergency))) (PP (IN in) (BASENP (DT the) (NN country)))) (PP (IN on) (BASENP (NNP Saturday)))) (COMMA ,) (PP (VBG according) (PP (TO to) (NP (BASENP (DT a) (NN statement)) (VP (VBN released) (PP (IN by) (BASENP (DT the) (NNP White) (NNP House))))))))) (PERIOD .))