(S (S (S (BASENP (DT The) (NN three) (NNS countries)) (VP (VBP are) (NP (NP (BASENP (DT the) (NN last)) (PP (IN in) (BASENP (NNP Asia)))) (SBAR (S (VP (TO to) (VP (VB have) (BASENP (JJ endemic) (NN polio))))))))) (CONJP (COMMA ,) (CC and)) (S (BASENP (DT the) (NN disease)) (VP (VBZ is) (VP (VBN confined) (PP (TO to) (NP (NP (BASENP (DT a) (JJ small) (NN number)) (PP (IN of) (BASENP (NNS regions)))) (PP (IN within) (BASENP (DT the) (NN country))))))))) (PERIOD .))