( ( ( The ( large ( central vacuole ) ) ) ( of ( plant cells ) ) ) ( ( is ( a ( special case ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ large) (JJ central) (NN vacuole)) (PP (IN of) (NP (NN plant) (NNS cells)))) (VP (VBZ is) (NP (DT a) (JJ special) (NN case))) (. .)))
The        large central vacuole of plant cells is a special case.
(ROOT (S (NP (DT The) (NN cell) (NN sap)) (VP (VBZ is) (NP (NP (DT the) (NN liquid)) (PP (IN inside) (NP (DT the) (JJ central) (NN vacuole))))) (. .)))