( cell ( membranes ( and ( contractile vacuoles ) ) ) )
(ROOT (NP (NN cell) (NN membranes) (CC and) (JJ contractile) (NNS vacuoles)))
cell membranes and contractile vacuoles
(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))))) (. .)))