( ( Calcium Osteoporosis ) ( ( is ( ( a disease ) ( that ( involves ( ( the loss ) ( of ( bone mass ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Calcium) (NNP Osteoporosis)) (VP (VBZ is) (NP (NP (DT a) (NN disease)) (SBAR (WHNP (WDT that)) (S (VP (VBZ involves) (NP (NP (DT the) (NN loss)) (PP (IN of) (NP (NN bone) (NN mass))))))))) (. .)))
Calcium Osteoporosis is a disease that involves the loss of bone mass.
(ROOT (S (NP (RB Too) (JJ little) (NN calcium)) (VP (MD can) (VP (VB cause) (NP (DT the) (NN disease) (NN osteoporosis)))) (. .)))