( Volume ( ( ( is ( ( the amount ) ( of space ) ) ) ( that ( matter ( take up ) ) ) ) . ) )
(ROOT (S (NP (NN Volume)) (VP (VBZ is) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN space)))) (SBAR (IN that) (S (NP (NN matter)) (VP (VBP take) (PRT (RP up)))))) (. .)))
Volume is the amount of space that matter take up.
(ROOT (S (NP (DT The) (NN term) (NN volume)) (VP (VBZ means) (SBAR (S (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN space) (NN matter)))) (VP (VBZ takes) (PRT (RP up)))))) (. .)))