( ( ( The amount ) ( of ( water ( ( an object ) displaces ) ) ) ) ( , ( used ( to ( measure ( ( the volume ) ( of ( irregular objects ) ) ) ) ) ) ) )
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NP (NN water)) (SBAR (S (NP (DT an) (NN object)) (VP (VBZ displaces))))))) (, ,) (VP (VBD used) (S (VP (TO to) (VP (VB measure) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (NN irregular) (NNS objects))))))))))
The amount of water an object displaces, used to measure the volume of irregular objects
(ROOT (S (NP (NN Volume)) (VP (VBZ is) (NP (NP (DT a) (NN measure)) (PP (IN of) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN space)))))) (SBAR (IN that) (S (NP (NP (DT a) (NN substance)) (CC or) (NP (DT an) (NN object))) (VP (VBZ occupies))))) (. .)))