( ( ( ( Water , ) ( ( the ( main component ) ) ( of grapes ) ) ) , ) ( ( is diamagnetic ) . ) )
(ROOT (S (NP (NP (NNP Water)) (, ,) (NP (NP (DT the) (JJ main) (NN component)) (PP (IN of) (NP (NNS grapes)))) (, ,)) (VP (VBZ is) (ADJP (JJ diamagnetic))) (. .)))
Water, the main component of grapes, is diamagnetic.
(ROOT (S (NP (NNP Water)) (VP (VBZ is) (NP (NP (DT the) (JJ main) (NN component)) (PP (IN of) (NP (NN milk))))) (. .)))