( ( An ( extensive property ) ) ( ( is ( ( any property ) ( that ( ( ( depends ( on ( the size ) ) ) ( -LRB- ( ( or extent ) -RRB- ) ) ) ( of ( ( the system ) ( under consideration ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT An) (JJ extensive) (NN property)) (VP (VBZ is) (NP (NP (DT any) (NN property)) (SBAR (WHNP (WDT that)) (S (VP (VBZ depends) (PP (IN on) (NP (DT the) (NN size))) (PRN (-LRB- -LRB-) (CC or) (VB extent) (-RRB- -RRB-)) (PP (IN of) (NP (NP (DT the) (NN system)) (PP (IN under) (NP (NN consideration)))))))))) (. .)))
An extensive property is any property that depends on the size (or extent) of the system under consideration.
(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.