( ( The ( greatest ( proportional increase ) ) ) ( ( has ( ( ( ( been ( in ( life expectancy ) ) ) ( ( ( at birth ) and ) ( during childhood ) ) ) , ) ( illustrating ( ( the ( major achievements ) ) ( ( made ( over ( the years ) ) ) ( in ( ( reducing mortality ) ( in ( ( infancy and ) childhood ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJS greatest) (JJ proportional) (NN increase)) (VP (VBZ has) (VP (VBN been) (PP (IN in) (NP (NN life) (NN expectancy))) (PP (PP (IN at) (NP (NN birth))) (CC and) (PP (IN during) (NP (NN childhood)))) (, ,) (S (VP (VBG illustrating) (NP (NP (DT the) (JJ major) (NNS achievements)) (VP (VBN made) (PP (IN over) (NP (DT the) (NNS years))) (PP (IN in) (S (VP (VBG reducing) (NP (NN mortality)) (PP (IN in) (NP (NN infancy) (CC and) (NN childhood)))))))))))) (. .)))
The greatest proportional increase has been in life expectancy at birth and during childhood, illustrating the major achievements made over the years in reducing mortality in infancy and childhood.
(ROOT (S (NP (NNP Infancy)) (VP (VBZ is) (NP (NP (DT the) (JJ first) (NN year)) (PP (IN of) (NP (NP (NN life)) (PP (VBG following) (NP (NN birth))))))) (. .)))