( ( ( Calcium and ) ( vitamin D ) ) ( ( have ( been ( shown ( to ( ( decrease ( ( the risk ) ( of osteoporosis ) ) ) ( for ( people ( with ( inadequate diets ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Calcium)) (CC and) (NP (NNP vitamin) (NNP D))) (VP (VBP have) (VP (VBN been) (VP (VBN shown) (S (VP (TO to) (VP (VB decrease) (NP (NP (DT the) (NN risk)) (PP (IN of) (NP (NN osteoporosis)))) (PP (IN for) (NP (NP (NNS people)) (PP (IN with) (NP (JJ inadequate) (NNS diets))))))))))) (. .)))
Calcium and vitamin D have been shown to decrease the risk of osteoporosis for people with inadequate diets.
(ROOT (S (NP (NP (DT A) (NN diet)) (ADJP (JJ rich) (PP (IN in) (NP (NN calcium) (CC and) (NN vitamin) (NNS d))))) (VP (MD may) (VP (VB reduce) (NP (NP (DT the) (NN risk)) (PP (IN of) (NP (NN osteoporosis) (CC and) (JJ related) (NN bone) (NNS fractures)))))) (. .)))