( ( The ( human body ) ) ( ( contains ( ( a ( great deal ) ) ( of ( ( ( ( nitrogen -LRB- ) ( ( an ( inert gas ) ) ( comprising ( ( 78 % ) ( of ( the atmosphere ) ) ) ) ) ) -RRB- ) ( dissolved ( in ( ( ( the blood ) and ) ( other ( body tissues ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ human) (NN body)) (VP (VBZ contains) (NP (NP (DT a) (JJ great) (NN deal)) (PP (IN of) (NP (NP (NP (NN nitrogen)) (-LRB- -LRB-) (NP (NP (DT an) (JJ inert) (NN gas)) (VP (VBG comprising) (NP (NP (CD 78) (NN %)) (PP (IN of) (NP (DT the) (NN atmosphere)))))) (-RRB- -RRB-)) (VP (VBN dissolved) (PP (IN in) (NP (NP (DT the) (NN blood)) (CC and) (NP (JJ other) (NN body) (NNS tissues))))))))) (. .)))
The human body contains a great deal of nitrogen (an inert gas comprising 78% of the atmosphere) dissolved in the blood and other body tissues.
(ROOT (S (NP (NN Nitrogen) (NN gas)) (VP (VBZ comprises) (NP (NP (QP (RB about) (NNS three-fourths))) (PP (IN of) (NP (NP (NN earth) (POS 's)) (NN atmosphere))))) (. .)))