( So ( ( ( ( ( an ( extensive property ) ) ( actually ( does ( depend ( on ( ( the quantity ) ( of ( the sample ) ) ) ) ) ) ) ) and ) ( it ( relates ( to ( ( the amount ) ( of ( ( the substance ) ( that ( ( is actually ) present ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (CC So) (S (NP (DT an) (JJ extensive) (NN property)) (ADVP (RB actually)) (VP (VBZ does) (VP (VB depend) (PP (IN on) (NP (NP (DT the) (NN quantity)) (PP (IN of) (NP (DT the) (NN sample)))))))) (CC and) (S (NP (PRP it)) (VP (VBZ relates) (PP (TO to) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NP (DT the) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADVP (RB actually)) (ADJP (JJ present))))))))))) (. .)))
So an extensive property actually does depend on the quantity of the sample and it relates to the amount of the substance that is actually present.
(ROOT (S (NP (DT The) (JJ extensive) (NN property)) (VP (VBZ is) (NP (NP (DT a) (NN property)) (SBAR (WHNP (WDT that)) (S (VP (VBZ depends) (PP (IN on) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NP (NN matter)) (PP (IN in) (NP (DT a) (NN sample)))))))))))) (. .)))
The extensive property is a property that depends on the amount of matter in a sample.