( ( ( volume ( The amount ) ) ( of ( 3-dimensional space ) ) ) ( ( occupied ( by ( ( an ( ( object or ) substance ) ) ( -LRB- ( ( measured ( in ( cubic units ) ) ) -RRB- ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NN volume) (DT The) (NN amount)) (PP (IN of) (NP (JJ 3-dimensional) (NN space)))) (VP (VBD occupied) (PP (IN by) (NP (NP (DT an) (NN object) (CC or) (NN substance)) (PRN (-LRB- -LRB-) (VP (VBN measured) (PP (IN in) (NP (JJ cubic) (NNS units)))) (-RRB- -RRB-))))) (. .)))
volume The amount of 3-dimensional space occupied by an object or substance (measured in cubic units).
(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))))) (. .)))