( ( ( The ( primary task ) ) ( of blood ) ) ( ( is ( to ( ( ( ( carry ( fuel ( -LRB- ( ( ( nutrients and ) oxygen ) -RRB- ) ) ) ) ( to ( ( various components ) ( of ( the body ) ) ) ) ) , ) ( then ( to ( ( carry away ) ( ( waste products ) ( -LRB- ( ( ( ( carbon dioxide ) and ) ( dead cells ) ) -RRB- ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ primary) (NN task)) (PP (IN of) (NP (NN blood)))) (VP (VBZ is) (S (VP (TO to) (VP (VB carry) (NP (NP (NN fuel)) (PRN (-LRB- -LRB-) (NP (NP (NNS nutrients)) (CC and) (NP (NN oxygen))) (-RRB- -RRB-))) (PP (TO to) (NP (NP (JJ various) (NNS components)) (PP (IN of) (NP (DT the) (NN body))))) (, ,) (S (RB then) (VP (TO to) (VP (VB carry) (PRT (RP away)) (NP (NP (NN waste) (NNS products)) (PRN (-LRB- -LRB-) (NP (NP (NN carbon) (NN dioxide)) (CC and) (NP (JJ dead) (NNS cells))) (-RRB- -RRB-)))))))))) (. .)))
The primary task of blood is to carry fuel ( nutrients and oxygen ) to various components of the body, then to carry away waste products ( carbon dioxide and dead cells ).
(ROOT (S (PP (IN In) (NP (DT the) (NN body))) (, ,) (S (NP (NN oxygen)) (VP (VBZ is) (VP (VBN used) (PP (IN by) (NP (NP (NNS cells)) (PP (IN of) (NP (NP (DT the) (NN body) (POS 's)) (NNS tissues)))))))) (CC and) (S (NP (NN carbon) (NN dioxide)) (VP (VBZ is) (VP (VBN produced) (PP (IN as) (NP (DT a) (NN waste) (NN product)))))) (. .)))