(S (S (PP (VBG According) (PP (TO to) (NP (BASENP (NNP Henry) (NNP Akpan)) (COMMA ,) (NP (BASENP (JJ chief) (NN epidemiologist)) (PP (IN at) (NP (BASENP (NNP Nigeria) (POS 's)) (NP (BASENP (NNP Ministry)) (PP (IN of) (BASENP (NNP Health)))))))))) (COMMA ,) (S (NP (BASENP (NN 111)) (PP (IN of) (BASENP (DT the) (NN 163) (VBN recorded) (NNS deaths)))) (VP (VBP have) (VP (VBN been) (NP (BASENP (NNS children)) (COMMA ,) (NP (BASENP (NN many)) (ADJP (BASENP (ADJP (RB only) (JJ several)) (NNS years)) (JJ old)))))))) (PERIOD .))