( ( Capillaries ( ( The ( smallest ( blood vessels ) ) ) ( in ( ( the body ) ( ( through which ) ( ( most ( of ( ( ( ( ( ( the oxygen ) , ) ( carbon dioxide ) ) , ) and ) ( nutrient exchanges ) ) ) ) ( take place ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Capillaries) (NP (NP (DT The) (JJS smallest) (NN blood) (NNS vessels)) (PP (IN in) (NP (NP (DT the) (NN body)) (SBAR (WHPP (IN through) (WHNP (WDT which))) (S (NP (NP (JJS most)) (PP (IN of) (NP (NP (DT the) (NN oxygen)) (, ,) (NP (NN carbon) (NN dioxide)) (, ,) (CC and) (NP (JJ nutrient) (NNS exchanges))))) (VP (VBP take) (NP (NN place))))))))) (. .)))
Capillaries The smallest blood vessels in the body through which most of the oxygen, carbon dioxide, and nutrient exchanges take place.
(ROOT (S (NP (NNP Oxygen)) (VP (VBZ is) (VP (VBN transferred) (PP (IN through) (NP (NNS capillaries))))) (. .)))