( ( Role ( Although ( ( ( the ( primary function ) ) ( of ( the ( circulatory system ) ) ) ) ( is ( ( the transport ) ( of ( oxygen ( and ( carbon dioxide ) ) ) ) ) ) ) ) ) ( , ( ( much else ) ( ( is ( ( carried along ) ( with ( ( ( the blood ) - ) ( ( energy supplies ) ( for ( ( ( ( ( ( ( ( ( ( ( cells , ) water ) , ) hormones ) , ) minerals ) , ) ( immune ( system ( ( cells and ) substances ) ) ) ) , ) and ) ( other ( necessary materials ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (ADVP (RB Role)) (IN Although) (S (NP (NP (DT the) (JJ primary) (NN function)) (PP (IN of) (NP (DT the) (JJ circulatory) (NN system)))) (VP (VBZ is) (NP (NP (DT the) (NN transport)) (PP (IN of) (NP (NN oxygen) (CC and) (NN carbon) (NN dioxide))))))) (, ,) (ADVP (RB much) (RB else)) (VP (VBZ is) (VP (VBN carried) (PRT (RP along)) (PP (IN with) (NP (NP (DT the) (NN blood)) (: -) (NP (NP (NN energy) (NNS supplies)) (PP (IN for) (NP (NP (NNS cells)) (, ,) (NP (NN water)) (, ,) (NP (NNS hormones)) (, ,) (NP (NNS minerals)) (, ,) (NP (JJ immune) (NN system) (NNS cells) (CC and) (NNS substances)) (, ,) (CC and) (NP (JJ other) (JJ necessary) (NNS materials))))))))) (. .)))
Role Although the primary function of the circulatory system is the transport of oxygen and carbon dioxide, much else is carried along with the blood - energy supplies for  cells, water, hormones, minerals, immune system cells and substances, and other necessary materials.
(ROOT (S (NP (NP (DT The) (JJ main) (NN function)) (PP (IN of) (NP (DT the) (JJ circulatory) (NN system)))) (VP (VBZ is) (S (VP (TO to) (VP (VB transport) (NP (NNS materials)))))) (. .)))