( ( ( ( ( ( ( ( The ( digestive system ) ) ( ( has ( ( ( ( ( three ( main functions ) ) . ) First ) , ) ( it ( ( ( breaks down ) food ) ( into ( molecules ( ( the body ) ( can use ) ) ) ) ) ) ) ) . ) ) Then ) , ) ( ( the molecules ) ( ( are ( ( ( absorbed ( into ( the blood ) ) ) and ) ( ( carried ( throughout ( the body ) ) ) . ) ) ) Finally ) ) ) , ) ( wastes ( are ( eliminated ( from ( the body ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (JJ digestive) (NN system)) (VP (VBZ has) (NP (NP (CD three) (JJ main) (NNS functions)) (. .) (NP (NNP First)) (, ,) (SBAR (S (NP (PRP it)) (VP (VBZ breaks) (PRT (RP down)) (NP (NN food)) (PP (IN into) (NP (NP (NNS molecules)) (SBAR (S (NP (DT the) (NN body)) (VP (MD can) (VP (VB use)))))))))))) (. .)) (RB Then) (, ,) (S (NP (DT the) (NNS molecules)) (VP (VBP are) (VP (VP (VBN absorbed) (PP (IN into) (NP (DT the) (NN blood)))) (CC and) (VP (VBN carried) (PP (IN throughout) (NP (DT the) (NN body))) (. .)))) (ADVP (RB Finally))) (, ,) (S (NP (NNS wastes)) (VP (VBP are) (VP (VBN eliminated) (PP (IN from) (NP (DT the) (NN body)))))) (. .)))
The digestive system has three main functions. First, it breaks down food into molecules the body can use. Then, the molecules are absorbed into the blood and carried throughout the body. Finally, wastes are eliminated from the body.
(ROOT (S (NP (NP (DT The) (JJ main) (NN function)) (PP (IN of) (NP (DT the) (JJ human) (NN digestive) (NN system)))) (VP (VBZ is) (S (VP (TO to) (VP (VB break) (PRT (RP down)) (NP (NP (NNS foods)) (PP (IN for) (NP (NN absorption)))) (PP (IN into) (NP (DT the) (NN blood))))))) (. .)))