( ( ( The ( main function ) ) ( of ( the carbohydrates ) ) ) ( ( ( ( ( ( is ( eventual conversion ) ) ( to ( an ( energy source ) ) ) ) ( in ( ( the form ) ( of glucose ) ) ) ) , ) ( ( the ( primary ( energy source ) ) ) ( for ( ( all cells ) ( in ( the body ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ main) (NN function)) (PP (IN of) (NP (DT the) (NNS carbohydrates)))) (VP (VBZ is) (NP (JJ eventual) (NN conversion)) (PP (TO to) (NP (DT an) (NN energy) (NN source))) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN glucose))))) (, ,) (NP (NP (DT the) (JJ primary) (NN energy) (NN source)) (PP (IN for) (NP (NP (DT all) (NNS cells)) (PP (IN in) (NP (DT the) (NN body))))))) (. .)))
The main function of the carbohydrates is eventual conversion to an energy source in the form of glucose, the primary energy source for all cells in the body.
(ROOT (S (NP (DT All) (NNS cells)) (VP (VBP need) (NP (NP (NN glucose)) (PP (IN for) (NP (NN energy))))) (. .)))