( Volume ( is ( ( a measure ) ( of ( ( the space ) ( occupied ( by ( ( ( ( ( a sample ) . ) ( Siede Preis ) ) , ) ( Getty Images ) ) ) ) ) ) ) ) )
(ROOT (S (NP (NN Volume)) (VP (VBZ is) (NP (NP (DT a) (NN measure)) (PP (IN of) (NP (NP (DT the) (NN space)) (ADJP (VBN occupied) (PP (IN by) (NP (NP (NP (DT a) (NN sample)) (. .) (NP (NNP Siede) (NNP Preis)) (, ,)) (NP (NNP Getty) (NNP Images)))))))))))
Volume is a measure of the space occupied by a sample.  Siede Preis, Getty Images
(ROOT (S (NP (DT The) (NN term) (NN volume)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (S (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN space)))) (ADJP (VBN occupied) (PP (IN by) (NP (NP (DT a) (NN sample)) (PP (IN of) (NP (NN matter)))))))))))) (. .)))