( Researchers ( ( could ( ( compare ( these data ) ) ( to ( ( the number ) ( of ( people ( ( living ( in ( the area ) ) ) ( to ( determine ( ( the ( average amount ) ) ( of ( disposable income ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Researchers)) (VP (MD could) (VP (VB compare) (NP (DT these) (NNS data)) (PP (TO to) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS people)) (VP (VBG living) (PP (IN in) (NP (DT the) (NN area))) (S (VP (TO to) (VP (VB determine) (NP (NP (DT the) (JJ average) (NN amount)) (PP (IN of) (NP (JJ disposable) (NN income)))))))))))))) (. .)))
Researchers could compare these data to the number of people living in the area to determine the average amount of disposable income.
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NP (NN food)) (ADJP (JJ available) (PP (IN in) (NP (DT the) (NN area))))))) (ADVP (RB best)) (VP (VBZ determines) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS wolves)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB live) (PP (IN in) (NP (DT an) (NN area))))))))))) (. .)))