( ( ( The fluid ) ( inside ( the vacuole ) ) ) ( ( is ( known ( as ( CELL SAP ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN fluid)) (PP (IN inside) (NP (DT the) (NN vacuole)))) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (NNP CELL) (NNP SAP))))) (. .)))
The fluid inside the vacuole is known as CELL SAP.
(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))))) (. .)))